Merge branch 'master' into DRTVWR-501-maint

# Conflicts:
#	autobuild.xml
#	indra/newview/llimprocessing.cpp

40 files changed, 591 insertions, 505 deletions

diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index 33fa186a2e..88667bdc11 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -15,7 +15,6 @@ include(BuildPackagesInfo)
 include(BuildVersion)
 include(CMakeCopyIfDifferent)
 include(DBusGlib)
-include(DirectX)
 include(DragDrop)
 include(EXPAT)
 include(FMODSTUDIO)
@@ -1583,20 +1582,12 @@ if (WINDOWS)
         list(APPEND viewer_SOURCE_FILES ${viewer_RESOURCE_FILES})
     endif (NOT USESYSTEMLIBS)
 
-    find_library(DINPUT_LIBRARY dinput8 ${DIRECTX_LIBRARY_DIR})
-    find_library(DXGUID_LIBRARY dxguid ${DIRECTX_LIBRARY_DIR})
-    mark_as_advanced(
-        DINPUT_LIBRARY
-        DXGUID_LIBRARY
-        )
-
 # see EXP-1765 - theory is opengl32.lib needs to be included before gdi32.lib (windows libs)
     set(viewer_LIBRARIES
         opengl32
         ${WINDOWS_LIBRARIES}
         comdlg32
-        ${DINPUT_LIBRARY}
-        ${DXGUID_LIBRARY}
+        dxguid
         kernel32
         odbc32
         odbccp32
@@ -1783,6 +1774,11 @@ if (WINDOWS)
     # be met. I'm looking forward to a source-code split-up project next year that will address this kind of thing.
     # In the meantime, if you have any ideas on how to easily maintain one list, either here or in viewer_manifest.py
     # and have the build deps get tracked *please* tell me about it.
+    # nat: https://cmake.org/cmake/help/v3.14/command/file.html
+    # "For example, the code
+    # file(STRINGS myfile.txt myfile)
+    # stores a list in the variable myfile in which each item is a line from the input file."
+    # And of course it's straightforward to read a text file in Python.
 
     set(COPY_INPUT_DEPENDENCIES
       # The following commented dependencies are determined at variably at build time. Can't do this here.
@@ -1801,12 +1797,6 @@ if (WINDOWS)
       ${SHARED_LIB_STAGING_DIR}/Release/openjpeg.dll
       ${SHARED_LIB_STAGING_DIR}/RelWithDebInfo/openjpeg.dll
       ${SHARED_LIB_STAGING_DIR}/Debug/openjpegd.dll
-      ${SHARED_LIB_STAGING_DIR}/Release/msvcr100.dll
-      ${SHARED_LIB_STAGING_DIR}/Release/msvcp100.dll
-      ${SHARED_LIB_STAGING_DIR}/RelWithDebInfo/msvcr100.dll
-      ${SHARED_LIB_STAGING_DIR}/RelWithDebInfo/msvcp100.dll
-      ${SHARED_LIB_STAGING_DIR}/Debug/msvcr100d.dll
-      ${SHARED_LIB_STAGING_DIR}/Debug/msvcp100d.dll
       ${SHARED_LIB_STAGING_DIR}/Release/libhunspell.dll
       ${SHARED_LIB_STAGING_DIR}/RelWithDebInfo/libhunspell.dll
       ${SHARED_LIB_STAGING_DIR}/Debug/libhunspell.dll
@@ -1990,6 +1980,7 @@ endif (WINDOWS)
 # modern version.
 
 target_link_libraries(${VIEWER_BINARY_NAME}
+    ${LEGACY_STDIO_LIBS}
     ${PNG_PRELOAD_ARCHIVES}
     ${ZLIB_PRELOAD_ARCHIVES}
     ${URIPARSER_PRELOAD_ARCHIVES}
@@ -2016,7 +2007,7 @@ target_link_libraries(${VIEWER_BINARY_NAME}
     ${viewer_LIBRARIES}
     ${BOOST_PROGRAM_OPTIONS_LIBRARY}
     ${BOOST_REGEX_LIBRARY}
-    ${BOOST_COROUTINE_LIBRARY}
+    ${BOOST_FIBER_LIBRARY}
     ${BOOST_CONTEXT_LIBRARY}
     ${DBUSGLIB_LIBRARIES}
     ${OPENGL_LIBRARIES}
@@ -2450,6 +2441,7 @@ if (LL_TESTS)
   set_source_files_properties(
     lllogininstance.cpp
     PROPERTIES
+    LL_TEST_ADDITIONAL_SOURCE_FILES llversioninfo.cpp
     LL_TEST_ADDITIONAL_LIBRARIES "${BOOST_SYSTEM_LIBRARY}"
   )
 
@@ -2499,7 +2491,7 @@ if (LL_TESTS)
     ${OPENSSL_LIBRARIES}
     ${CRYPTO_LIBRARIES}
     ${LIBRT_LIBRARY}
-    ${BOOST_COROUTINE_LIBRARY}
+    ${BOOST_FIBER_LIBRARY}
     ${BOOST_CONTEXT_LIBRARY}
   )
 
diff --git a/indra/newview/VIEWER_VERSION.txt b/indra/newview/VIEWER_VERSION.txt
index 7d765dabde..3d05e8cfb4 100644
--- a/indra/newview/VIEWER_VERSION.txt
+++ b/indra/newview/VIEWER_VERSION.txt
@@ -1 +1 @@
-6.4.5
+6.4.6
diff --git a/indra/newview/llaccountingcostmanager.cpp b/indra/newview/llaccountingcostmanager.cpp
index 1dddf52961..e09527a34b 100644
--- a/indra/newview/llaccountingcostmanager.cpp
+++ b/indra/newview/llaccountingcostmanager.cpp
@@ -48,7 +48,7 @@ LLAccountingCostManager::LLAccountingCostManager()
 void LLAccountingCostManager::accountingCostCoro(std::string url,
     eSelectionType selectionType, const LLHandle<LLAccountingCostObserver> observerHandle)
 {
-    LL_DEBUGS("LLAccountingCostManager") << "Entering coroutine " << LLCoros::instance().getName()
+    LL_DEBUGS("LLAccountingCostManager") << "Entering coroutine " << LLCoros::getName()
         << " with url '" << url << LL_ENDL;
 
     LLCore::HttpRequest::policy_t httpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID);
@@ -158,7 +158,7 @@ void LLAccountingCostManager::accountingCostCoro(std::string url,
     }
     catch (...)
     {
-        LOG_UNHANDLED_EXCEPTION(STRINGIZE("coroutine " << LLCoros::instance().getName()
+        LOG_UNHANDLED_EXCEPTION(STRINGIZE("coroutine " << LLCoros::getName()
                                           << "('" << url << "')"));
         throw;
     }
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index d2b7c9d85e..d9cc026c52 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -1126,7 +1126,7 @@ bool LLAppViewer::init()
 
 	// Save the current version to the prefs file
 	gSavedSettings.setString("LastRunVersion",
-							 LLVersionInfo::getChannelAndVersion());
+							 LLVersionInfo::instance().getChannelAndVersion());
 
 	gSimLastTime = gRenderStartTime.getElapsedTimeF32();
 	gSimFrames = (F32)gFrameCount;
@@ -1168,7 +1168,7 @@ bool LLAppViewer::init()
 	// UpdaterServiceSettings
 	updater.args.add(stringize(gSavedSettings.getU32("UpdaterServiceSetting")));
 	// channel
-	updater.args.add(LLVersionInfo::getChannel());
+	updater.args.add(LLVersionInfo::instance().getChannel());
 	// testok
 	updater.args.add(stringize(gSavedSettings.getBOOL("UpdaterWillingToTest")));
 	// ForceAddressSize
@@ -1432,6 +1432,8 @@ bool LLAppViewer::doFrame()
 
 		// canonical per-frame event
 		mainloop.post(newFrame);
+		// give listeners a chance to run
+		llcoro::suspend();
 
 		if (!LLApp::isExiting())
 		{
@@ -1693,24 +1695,9 @@ bool LLAppViewer::cleanup()
 		gDirUtilp->deleteFilesInDir(logdir, "*-*-*-*-*.dmp");
 	}
 
-	{
-		// Kill off LLLeap objects. We can find them all because LLLeap is derived
-		// from LLInstanceTracker. But collect instances first: LLInstanceTracker
-		// specifically forbids adding/deleting instances while iterating.
-		std::vector<LLLeap*> leaps;
-		leaps.reserve(LLLeap::instanceCount());
-		for (LLLeap::instance_iter li(LLLeap::beginInstances()), lend(LLLeap::endInstances());
-			 li != lend; ++li)
-		{
-			leaps.push_back(&*li);
-		}
-		// Okay, now trash them all. We don't have to NULL or erase the entry
-		// in 'leaps' because the whole vector is going away momentarily.
-		BOOST_FOREACH(LLLeap* leap, leaps)
-		{
-			delete leap;
-		}
-	} // destroy 'leaps'
+	// Kill off LLLeap objects. We can find them all because LLLeap is derived
+	// from LLInstanceTracker.
+	LLLeap::instance_snapshot().deleteAll();
 
 	//flag all elements as needing to be destroyed immediately
 	// to ensure shutdown order
@@ -2131,25 +2118,19 @@ bool LLAppViewer::cleanup()
 
 	removeMarkerFiles();
 
-	// It's not at first obvious where, in this long sequence, generic cleanup
-	// calls OUGHT to go. So let's say this: as we migrate cleanup from
+	// It's not at first obvious where, in this long sequence, a generic cleanup
+	// call OUGHT to go. So let's say this: as we migrate cleanup from
 	// explicit hand-placed calls into the generic mechanism, eventually
-	// all cleanup will get subsumed into the generic calls. So the calls you
+	// all cleanup will get subsumed into the generic call. So the calls you
 	// still see above are calls that MUST happen before the generic cleanup
 	// kicks in.
 
-	// This calls every remaining LLSingleton's cleanupSingleton() method.
-	// This method should perform any cleanup that might take significant
-	// realtime, or might throw an exception.
-	LLSingletonBase::cleanupAll();
-
 	// The logging subsystem depends on an LLSingleton. Any logging after
 	// LLSingletonBase::deleteAll() won't be recorded.
 	LL_INFOS() << "Goodbye!" << LL_ENDL;
 
-	// This calls every remaining LLSingleton's deleteSingleton() method.
-	// No class destructor should perform any cleanup that might take
-	// significant realtime, or throw an exception.
+	// This calls every remaining LLSingleton's cleanupSingleton() and
+	// deleteSingleton() methods.
 	LLSingletonBase::deleteAll();
 
 	removeDumpDir();
@@ -2662,7 +2643,7 @@ bool LLAppViewer::initConfiguration()
 	std::string CmdLineChannel(gSavedSettings.getString("CmdLineChannel"));
 	if(! CmdLineChannel.empty())
     {
-		LLVersionInfo::resetChannel(CmdLineChannel);
+		LLVersionInfo::instance().resetChannel(CmdLineChannel);
 	}
 
 	// If we have specified crash on startup, set the global so we'll trigger the crash at the right time
@@ -2883,12 +2864,11 @@ bool LLAppViewer::initConfiguration()
 
 	// Let anyone else who cares know that we've populated our settings
 	// variables.
-	for (LLControlGroup::key_iter ki(LLControlGroup::beginKeys()), kend(LLControlGroup::endKeys());
-		 ki != kend; ++ki)
+	for (const auto& key : LLControlGroup::key_snapshot())
 	{
 		// For each named instance of LLControlGroup, send an event saying
 		// we've initialized an LLControlGroup instance by that name.
-		LLEventPumps::instance().obtain("LLControlGroup").post(LLSDMap("init", *ki));
+		LLEventPumps::instance().obtain("LLControlGroup").post(LLSDMap("init", key));
 	}
 
 	return true; // Config was successful.
@@ -3108,16 +3088,12 @@ LLSD LLAppViewer::getViewerInfo() const
 	// is available to a getInfo() caller as to the user opening
 	// LLFloaterAbout.
 	LLSD info;
-	LLSD version;
-	version.append(LLVersionInfo::getMajor());
-	version.append(LLVersionInfo::getMinor());
-	version.append(LLVersionInfo::getPatch());
-	version.append(LLVersionInfo::getBuild());
-	info["VIEWER_VERSION"] = version;
-	info["VIEWER_VERSION_STR"] = LLVersionInfo::getVersion();
-	info["CHANNEL"] = LLVersionInfo::getChannel();
+	auto& versionInfo(LLVersionInfo::instance());
+	info["VIEWER_VERSION"] = LLSDArray(versionInfo.getMajor())(versionInfo.getMinor())(versionInfo.getPatch())(versionInfo.getBuild());
+	info["VIEWER_VERSION_STR"] = versionInfo.getVersion();
+	info["CHANNEL"] = versionInfo.getChannel();
     info["ADDRESS_SIZE"] = ADDRESS_SIZE;
-    std::string build_config = LLVersionInfo::getBuildConfig();
+    std::string build_config = versionInfo.getBuildConfig();
     if (build_config != "Release")
     {
         info["BUILD_CONFIG"] = build_config;
@@ -3125,12 +3101,8 @@ LLSD LLAppViewer::getViewerInfo() const
 
 	// return a URL to the release notes for this viewer, such as:
 	// https://releasenotes.secondlife.com/viewer/2.1.0.123456.html
-	std::string url = LLTrans::getString("RELEASE_NOTES_BASE_URL");
-	if (! LLStringUtil::endsWith(url, "/"))
-		url += "/";
-	url += LLURI::escape(LLVersionInfo::getVersion()) + ".html";
-
-	info["VIEWER_RELEASE_NOTES_URL"] = url;
+	std::string url = versionInfo.getReleaseNotes();
+	info["VIEWER_RELEASE_NOTES_URL"] = url.empty()? LLTrans::getString("RetrievingData") : url;
 
 	// Position
 	LLViewerRegion* region = gAgent.getRegion();
@@ -3423,12 +3395,12 @@ void LLAppViewer::writeSystemInfo()
     gDebugInfo["SLLog"] = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,"SecondLife.old");  //LLError::logFileName();
 #endif
 
-	gDebugInfo["ClientInfo"]["Name"] = LLVersionInfo::getChannel();
-	gDebugInfo["ClientInfo"]["MajorVersion"] = LLVersionInfo::getMajor();
-	gDebugInfo["ClientInfo"]["MinorVersion"] = LLVersionInfo::getMinor();
-	gDebugInfo["ClientInfo"]["PatchVersion"] = LLVersionInfo::getPatch();
-	gDebugInfo["ClientInfo"]["BuildVersion"] = LLVersionInfo::getBuild();
-	gDebugInfo["ClientInfo"]["AddressSize"] = LLVersionInfo::getAddressSize();
+	gDebugInfo["ClientInfo"]["Name"] = LLVersionInfo::instance().getChannel();
+	gDebugInfo["ClientInfo"]["MajorVersion"] = LLVersionInfo::instance().getMajor();
+	gDebugInfo["ClientInfo"]["MinorVersion"] = LLVersionInfo::instance().getMinor();
+	gDebugInfo["ClientInfo"]["PatchVersion"] = LLVersionInfo::instance().getPatch();
+	gDebugInfo["ClientInfo"]["BuildVersion"] = LLVersionInfo::instance().getBuild();
+	gDebugInfo["ClientInfo"]["AddressSize"] = LLVersionInfo::instance().getAddressSize();
 
 	gDebugInfo["CAFilename"] = gDirUtilp->getCAFile();
 
@@ -3471,7 +3443,7 @@ void LLAppViewer::writeSystemInfo()
 
 	// Dump some debugging info
 	LL_INFOS("SystemInfo") << "Application: " << LLTrans::getString("APP_NAME") << LL_ENDL;
-	LL_INFOS("SystemInfo") << "Version: " << LLVersionInfo::getChannelAndVersion() << LL_ENDL;
+	LL_INFOS("SystemInfo") << "Version: " << LLVersionInfo::instance().getChannelAndVersion() << LL_ENDL;
 
 	// Dump the local time and time zone
 	time_t now;
@@ -3693,7 +3665,7 @@ void LLAppViewer::handleViewerCrash()
 // static
 void LLAppViewer::recordMarkerVersion(LLAPRFile& marker_file)
 {
-	std::string marker_version(LLVersionInfo::getChannelAndVersion());
+	std::string marker_version(LLVersionInfo::instance().getChannelAndVersion());
 	if ( marker_version.length() > MAX_MARKER_LENGTH )
 	{
 		LL_WARNS_ONCE("MarkerFile") << "Version length ("<< marker_version.length()<< ")"
@@ -3710,7 +3682,7 @@ bool LLAppViewer::markerIsSameVersion(const std::string& marker_name) const
 {
 	bool sameVersion = false;
 
-	std::string my_version(LLVersionInfo::getChannelAndVersion());
+	std::string my_version(LLVersionInfo::instance().getChannelAndVersion());
 	char marker_version[MAX_MARKER_LENGTH];
 	S32  marker_version_length;
 
@@ -4671,6 +4643,9 @@ void LLAppViewer::idle()
 	LLFrameTimer::updateFrameTime();
 	LLFrameTimer::updateFrameCount();
 	LLEventTimer::updateClass();
+	// LLApp::stepFrame() performs the above three calls plus mRunner.run().
+	// Not sure why we don't call stepFrame() here, except that LLRunner seems
+	// completely redundant with LLEventTimer.
 	LLNotificationsUI::LLToast::updateClass();
 	LLSmoothInterpolation::updateInterpolants();
 	LLMortician::updateClass();
@@ -5283,37 +5258,40 @@ void LLAppViewer::idleNetwork()
 		const S64 frame_count = gFrameCount;  // U32->S64
 		F32 total_time = 0.0f;
 
-		while (gMessageSystem->checkAllMessages(frame_count, gServicePump))
 		{
-			if (gDoDisconnect)
+			LockMessageChecker lmc(gMessageSystem);
+			while (lmc.checkAllMessages(frame_count, gServicePump))
 			{
-				// We're disconnecting, don't process any more messages from the server
-				// We're usually disconnecting due to either network corruption or a
-				// server going down, so this is OK.
-				break;
-			}
+				if (gDoDisconnect)
+				{
+					// We're disconnecting, don't process any more messages from the server
+					// We're usually disconnecting due to either network corruption or a
+					// server going down, so this is OK.
+					break;
+				}
 
-			total_decoded++;
-			gPacketsIn++;
+				total_decoded++;
+				gPacketsIn++;
 
-			if (total_decoded > MESSAGE_MAX_PER_FRAME)
-			{
-				break;
-			}
+				if (total_decoded > MESSAGE_MAX_PER_FRAME)
+				{
+					break;
+				}
 
 #ifdef TIME_THROTTLE_MESSAGES
-			// Prevent slow packets from completely destroying the frame rate.
-			// This usually happens due to clumps of avatars taking huge amount
-			// of network processing time (which needs to be fixed, but this is
-			// a good limit anyway).
-			total_time = check_message_timer.getElapsedTimeF32();
-			if (total_time >= CheckMessagesMaxTime)
-				break;
+				// Prevent slow packets from completely destroying the frame rate.
+				// This usually happens due to clumps of avatars taking huge amount
+				// of network processing time (which needs to be fixed, but this is
+				// a good limit anyway).
+				total_time = check_message_timer.getElapsedTimeF32();
+				if (total_time >= CheckMessagesMaxTime)
+					break;
 #endif
-		}
+			}
 
-		// Handle per-frame message system processing.
-		gMessageSystem->processAcks(gSavedSettings.getF32("AckCollectTime"));
+			// Handle per-frame message system processing.
+			lmc.processAcks(gSavedSettings.getF32("AckCollectTime"));
+		}
 
 #ifdef TIME_THROTTLE_MESSAGES
 		if (total_time >= CheckMessagesMaxTime)
@@ -5571,12 +5549,12 @@ void LLAppViewer::handleLoginComplete()
 	initMainloopTimeout("Mainloop Init");
 
 	// Store some data to DebugInfo in case of a freeze.
-	gDebugInfo["ClientInfo"]["Name"] = LLVersionInfo::getChannel();
+	gDebugInfo["ClientInfo"]["Name"] = LLVersionInfo::instance().getChannel();
 
-	gDebugInfo["ClientInfo"]["MajorVersion"] = LLVersionInfo::getMajor();
-	gDebugInfo["ClientInfo"]["MinorVersion"] = LLVersionInfo::getMinor();
-	gDebugInfo["ClientInfo"]["PatchVersion"] = LLVersionInfo::getPatch();
-	gDebugInfo["ClientInfo"]["BuildVersion"] = LLVersionInfo::getBuild();
+	gDebugInfo["ClientInfo"]["MajorVersion"] = LLVersionInfo::instance().getMajor();
+	gDebugInfo["ClientInfo"]["MinorVersion"] = LLVersionInfo::instance().getMinor();
+	gDebugInfo["ClientInfo"]["PatchVersion"] = LLVersionInfo::instance().getPatch();
+	gDebugInfo["ClientInfo"]["BuildVersion"] = LLVersionInfo::instance().getBuild();
 
 	LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
 	if ( parcel && parcel->getMusicURL()[0])
diff --git a/indra/newview/llappviewerwin32.cpp b/indra/newview/llappviewerwin32.cpp
index d208e135bb..156a1c5893 100644
--- a/indra/newview/llappviewerwin32.cpp
+++ b/indra/newview/llappviewerwin32.cpp
@@ -500,68 +500,76 @@ void LLAppViewerWin32::disableWinErrorReporting()
 }
 
 const S32 MAX_CONSOLE_LINES = 500;
+// Only defined in newer SDKs than we currently use
+#ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
+#define ENABLE_VIRTUAL_TERMINAL_PROCESSING 4
+#endif
 
-static bool create_console()
-{
-	int h_con_handle;
-	long l_std_handle;
-
-	CONSOLE_SCREEN_BUFFER_INFO coninfo;
-	FILE *fp;
-
-	// allocate a console for this app
-	const bool isConsoleAllocated = AllocConsole();
-
-	// set the screen buffer to be big enough to let us scroll text
-	GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &coninfo);
-	coninfo.dwSize.Y = MAX_CONSOLE_LINES;
-	SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE), coninfo.dwSize);
+namespace {
 
-	// redirect unbuffered STDOUT to the console
-	l_std_handle = (long)GetStdHandle(STD_OUTPUT_HANDLE);
-	h_con_handle = _open_osfhandle(l_std_handle, _O_TEXT);
-	if (h_con_handle == -1)
-	{
-		LL_WARNS() << "create_console() failed to open stdout handle" << LL_ENDL;
-	}
-	else
-	{
-		fp = _fdopen( h_con_handle, "w" );
-		*stdout = *fp;
-		setvbuf( stdout, NULL, _IONBF, 0 );
-	}
+void set_stream(const char* desc, FILE* fp, DWORD handle_id, const char* name, const char* mode="w");
 
-	// redirect unbuffered STDIN to the console
-	l_std_handle = (long)GetStdHandle(STD_INPUT_HANDLE);
-	h_con_handle = _open_osfhandle(l_std_handle, _O_TEXT);
-	if (h_con_handle == -1)
-	{
-		LL_WARNS() << "create_console() failed to open stdin handle" << LL_ENDL;
-	}
-	else
-	{
-		fp = _fdopen( h_con_handle, "r" );
-		*stdin = *fp;
-		setvbuf( stdin, NULL, _IONBF, 0 );
-	}
+bool create_console()
+{
+    // allocate a console for this app
+    const bool isConsoleAllocated = AllocConsole();
 
-	// redirect unbuffered STDERR to the console
-	l_std_handle = (long)GetStdHandle(STD_ERROR_HANDLE);
-	h_con_handle = _open_osfhandle(l_std_handle, _O_TEXT);
-	if (h_con_handle == -1)
-	{
-		LL_WARNS() << "create_console() failed to open stderr handle" << LL_ENDL;
-	}
-	else
-	{
-		fp = _fdopen( h_con_handle, "w" );
-		*stderr = *fp;
-		setvbuf( stderr, NULL, _IONBF, 0 );
-	}
+    if (isConsoleAllocated)
+    {
+        // set the screen buffer to be big enough to let us scroll text
+        CONSOLE_SCREEN_BUFFER_INFO coninfo;
+        GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &coninfo);
+        coninfo.dwSize.Y = MAX_CONSOLE_LINES;
+        SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE), coninfo.dwSize);
+
+        // redirect unbuffered STDOUT to the console
+        set_stream("stdout", stdout, STD_OUTPUT_HANDLE, "CONOUT$");
+        // redirect unbuffered STDERR to the console
+        set_stream("stderr", stderr, STD_ERROR_HANDLE, "CONOUT$");
+        // redirect unbuffered STDIN to the console
+        // Don't bother: our console is solely for log output. We never read stdin.
+//      set_stream("stdin", stdin, STD_INPUT_HANDLE, "CONIN$", "r");
+    }
 
     return isConsoleAllocated;
 }
 
+void set_stream(const char* desc, FILE* fp, DWORD handle_id, const char* name, const char* mode)
+{
+    // SL-13528: This code used to be based on
+    // http://dslweb.nwnexus.com/~ast/dload/guicon.htm
+    // (referenced in https://stackoverflow.com/a/191880).
+    // But one of the comments on that StackOverflow answer points out that
+    // assigning to *stdout or *stderr "probably doesn't even work with the
+    // Universal CRT that was introduced in 2015," suggesting freopen_s()
+    // instead. Code below is based on https://stackoverflow.com/a/55875595.
+    auto std_handle = GetStdHandle(handle_id);
+    if (std_handle == INVALID_HANDLE_VALUE)
+    {
+        LL_WARNS() << "create_console() failed to get " << desc << " handle" << LL_ENDL;
+    }
+    else
+    {
+        if (mode == std::string("w"))
+        {
+            // Enable color processing on Windows 10 console windows.
+            DWORD dwMode = 0;
+            GetConsoleMode(std_handle, &dwMode);
+            dwMode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
+            SetConsoleMode(std_handle, dwMode);
+        }
+        // Redirect the passed fp to the console.
+        FILE* ignore;
+        if (freopen_s(&ignore, name, mode, fp) == 0)
+        {
+            // use unbuffered I/O
+            setvbuf( fp, NULL, _IONBF, 0 );
+        }
+    }
+}
+
+} // anonymous namespace
+
 LLAppViewerWin32::LLAppViewerWin32(const char* cmd_line) :
 	mCmdLine(cmd_line),
 	mIsConsoleAllocated(false)
diff --git a/indra/newview/llchannelmanager.cpp b/indra/newview/llchannelmanager.cpp
index 0b7b9cbbc7..9e7a8ba95c 100644
--- a/indra/newview/llchannelmanager.cpp
+++ b/indra/newview/llchannelmanager.cpp
@@ -48,11 +48,18 @@ LLChannelManager::LLChannelManager()
 	LLAppViewer::instance()->setOnLoginCompletedCallback(boost::bind(&LLChannelManager::onLoginCompleted, this));
 	mChannelList.clear();
 	mStartUpChannel = NULL;
-	
+
 	if(!gViewerWindow)
 	{
 		LL_ERRS() << "LLChannelManager::LLChannelManager() - viwer window is not initialized yet" << LL_ENDL;
 	}
+
+	// We don't actually need this instance right now, but our
+	// cleanupSingleton() method deletes LLScreenChannels, which need to
+	// unregister from LLUI. Calling LLUI::instance() here establishes the
+	// dependency so LLSingletonBase::deleteAll() calls our deleteSingleton()
+	// before LLUI::deleteSingleton().
+	LLUI::instance();
 }
 
 //--------------------------------------------------------------------------
diff --git a/indra/newview/llchathistory.cpp b/indra/newview/llchathistory.cpp
index 722523830b..431a8c60be 100644
--- a/indra/newview/llchathistory.cpp
+++ b/indra/newview/llchathistory.cpp
@@ -1356,10 +1356,8 @@ void LLChatHistory::appendMessage(const LLChat& chat, const LLSD &args, const LL
 				// We don't want multiple friendship offers to appear, this code checks if there are previous offers
 				// by iterating though all panels.
 				// Note: it might be better to simply add a "pending offer" flag somewhere
-				for (LLToastNotifyPanel::instance_iter ti(LLToastNotifyPanel::beginInstances())
-					, tend(LLToastNotifyPanel::endInstances()); ti != tend; ++ti)
+				for (auto& panel : LLToastNotifyPanel::instance_snapshot())
 				{
-					LLToastNotifyPanel& panel = *ti;
 					LLIMToastNotifyPanel * imtoastp = dynamic_cast<LLIMToastNotifyPanel *>(&panel);
 					const std::string& notification_name = panel.getNotificationName();
 					if (notification_name == "OfferFriendship"
diff --git a/indra/newview/llcurrencyuimanager.cpp b/indra/newview/llcurrencyuimanager.cpp
index b4a1457f47..df94e337da 100644
--- a/indra/newview/llcurrencyuimanager.cpp
+++ b/indra/newview/llcurrencyuimanager.cpp
@@ -166,11 +166,11 @@ void LLCurrencyUIManager::Impl::updateCurrencyInfo()
 		gAgent.getSecureSessionID().asString());
 	keywordArgs.appendString("language", LLUI::getLanguage());
 	keywordArgs.appendInt("currencyBuy", mUserCurrencyBuy);
-	keywordArgs.appendString("viewerChannel", LLVersionInfo::getChannel());
-	keywordArgs.appendInt("viewerMajorVersion", LLVersionInfo::getMajor());
-	keywordArgs.appendInt("viewerMinorVersion", LLVersionInfo::getMinor());
-	keywordArgs.appendInt("viewerPatchVersion", LLVersionInfo::getPatch());
-	keywordArgs.appendInt("viewerBuildVersion", LLVersionInfo::getBuild());
+	keywordArgs.appendString("viewerChannel", LLVersionInfo::instance().getChannel());
+	keywordArgs.appendInt("viewerMajorVersion", LLVersionInfo::instance().getMajor());
+	keywordArgs.appendInt("viewerMinorVersion", LLVersionInfo::instance().getMinor());
+	keywordArgs.appendInt("viewerPatchVersion", LLVersionInfo::instance().getPatch());
+	keywordArgs.appendInt("viewerBuildVersion", LLVersionInfo::instance().getBuild());
 	
 	LLXMLRPCValue params = LLXMLRPCValue::createArray();
 	params.append(keywordArgs);
@@ -241,11 +241,11 @@ void LLCurrencyUIManager::Impl::startCurrencyBuy(const std::string& password)
 	{
 		keywordArgs.appendString("password", password);
 	}
-	keywordArgs.appendString("viewerChannel", LLVersionInfo::getChannel());
-	keywordArgs.appendInt("viewerMajorVersion", LLVersionInfo::getMajor());
-	keywordArgs.appendInt("viewerMinorVersion", LLVersionInfo::getMinor());
-	keywordArgs.appendInt("viewerPatchVersion", LLVersionInfo::getPatch());
-	keywordArgs.appendInt("viewerBuildVersion", LLVersionInfo::getBuild());
+	keywordArgs.appendString("viewerChannel", LLVersionInfo::instance().getChannel());
+	keywordArgs.appendInt("viewerMajorVersion", LLVersionInfo::instance().getMajor());
+	keywordArgs.appendInt("viewerMinorVersion", LLVersionInfo::instance().getMinor());
+	keywordArgs.appendInt("viewerPatchVersion", LLVersionInfo::instance().getPatch());
+	keywordArgs.appendInt("viewerBuildVersion", LLVersionInfo::instance().getBuild());
 
 	LLXMLRPCValue params = LLXMLRPCValue::createArray();
 	params.append(keywordArgs);
diff --git a/indra/newview/llfloaterregioninfo.cpp b/indra/newview/llfloaterregioninfo.cpp
index 8bcc5bbe7a..ec1909d02a 100644
--- a/indra/newview/llfloaterregioninfo.cpp
+++ b/indra/newview/llfloaterregioninfo.cpp
@@ -637,11 +637,7 @@ void LLFloaterRegionInfo::refreshFromRegion(LLViewerRegion* region)
 		mInfoPanels.begin(),
 		mInfoPanels.end(),
 		llbind2nd(
-#if LL_WINDOWS
-			std::mem_fun1(&LLPanelRegionInfo::refreshFromRegion),
-#else
 			std::mem_fun(&LLPanelRegionInfo::refreshFromRegion),
-#endif
 			region));
     mEnvironmentPanel->refreshFromRegion(region);
 }
diff --git a/indra/newview/llfloaterreporter.cpp b/indra/newview/llfloaterreporter.cpp
index e038faecc9..702d612343 100644
--- a/indra/newview/llfloaterreporter.cpp
+++ b/indra/newview/llfloaterreporter.cpp
@@ -765,7 +765,7 @@ LLSD LLFloaterReporter::gatherReport()
 
 	std::ostringstream details;
 
-	details << "V" << LLVersionInfo::getVersion() << std::endl << std::endl;	// client version moved to body of email for abuse reports
+	details << "V" << LLVersionInfo::instance().getVersion() << std::endl << std::endl;	// client version moved to body of email for abuse reports
 
 	std::string object_name = getChild<LLUICtrl>("object_name")->getValue().asString();
 	if (!object_name.empty() && !mOwnerName.empty())
@@ -783,7 +783,7 @@ LLSD LLFloaterReporter::gatherReport()
 	std::string version_string;
 	version_string = llformat(
 			"%s %s %s %s %s",
-			LLVersionInfo::getShortVersion().c_str(),
+			LLVersionInfo::instance().getShortVersion().c_str(),
 			platform,
 			gSysCPU.getFamily().c_str(),
 			gGLManager.mGLRenderer.c_str(),
diff --git a/indra/newview/llimprocessing.cpp b/indra/newview/llimprocessing.cpp
index 79cf49ddb1..e1b58dde51 100644
--- a/indra/newview/llimprocessing.cpp
+++ b/indra/newview/llimprocessing.cpp
@@ -1404,10 +1404,8 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
             payload["sender"] = sender.getIPandPort();
 
             bool add_notification = true;
-            for (LLToastNotifyPanel::instance_iter ti(LLToastNotifyPanel::beginInstances())
-                , tend(LLToastNotifyPanel::endInstances()); ti != tend; ++ti)
+            for (auto& panel : LLToastNotifyPanel::instance_snapshot())
             {
-                LLToastNotifyPanel& panel = *ti;
                 const std::string& notification_name = panel.getNotificationName();
                 if (notification_name == "OfferFriendship" && panel.isControlPanelEnabled())
                 {
@@ -1619,6 +1617,7 @@ void LLIMProcessing::requestOfflineMessagesCoro(std::string url)
             from_group = message_data["from_group"].asString() == "Y";
         }
 
+
         LLIMProcessing::processNewMessage(
             message_data["from_agent_id"].asUUID(),
             from_group,
diff --git a/indra/newview/lllogininstance.cpp b/indra/newview/lllogininstance.cpp
index 873531ef22..9d54c8c9c5 100644
--- a/indra/newview/lllogininstance.cpp
+++ b/indra/newview/lllogininstance.cpp
@@ -215,8 +215,8 @@ void LLLoginInstance::constructAuthParams(LLPointer<LLCredential> user_credentia
 	request_params["last_exec_event"] = mLastExecEvent;
 	request_params["last_exec_duration"] = mLastExecDuration;
 	request_params["mac"] = (char*)hashed_unique_id_string;
-	request_params["version"] = LLVersionInfo::getVersion();
-	request_params["channel"] = LLVersionInfo::getChannel();
+	request_params["version"] = LLVersionInfo::instance().getVersion();
+	request_params["channel"] = LLVersionInfo::instance().getChannel();
 	request_params["platform"] = mPlatform;
 	request_params["address_size"] = ADDRESS_SIZE;
 	request_params["platform_version"] = mPlatformVersion;
@@ -332,7 +332,7 @@ void LLLoginInstance::handleLoginFailure(const LLSD& event)
         {
             data["certificate"] = response["certificate"];
         }
-        
+
         if (gViewerWindow)
             gViewerWindow->setShowProgress(FALSE);
 
@@ -349,13 +349,31 @@ void LLLoginInstance::handleLoginFailure(const LLSD& event)
         // login.cgi is insisting on a required update. We were called with an
         // event that bundles both the login.cgi 'response' and the
         // synchronization event from the 'updater'.
-        std::string required_version = response["message_args"]["VERSION"];
-        LL_WARNS("LLLogin") << "Login failed because an update to version " << required_version << " is required." << LL_ENDL;
+        std::string login_version = response["message_args"]["VERSION"];
+        std::string vvm_version   = updater["VERSION"];
+        std::string relnotes      = updater["URL"];
+        LL_WARNS("LLLogin") << "Login failed because an update to version " << login_version << " is required." << LL_ENDL;
+        // vvm_version might be empty because we might not have gotten
+        // SLVersionChecker's LoginSync handshake. But if it IS populated, it
+        // should (!) be the same as the version we got from login.cgi.
+        if ((! vvm_version.empty()) && vvm_version != login_version)
+        {
+            LL_WARNS("LLLogin") << "VVM update version " << vvm_version
+                                << " differs from login version " << login_version
+                                << "; presenting VVM version to match release notes URL"
+                                << LL_ENDL;
+            login_version = vvm_version;
+        }
+        if (relnotes.empty())
+        {
+            // I thought this would be available in strings.xml or some such
+            relnotes = "https://secondlife.com/support/downloads/";
+        }
 
         if (gViewerWindow)
             gViewerWindow->setShowProgress(FALSE);
 
-        LLSD args(LLSDMap("VERSION", required_version));
+        LLSD args(LLSDMap("VERSION", login_version)("URL", relnotes));
         if (updater.isUndefined())
         {
             // If the updater failed to shake hands, better advise the user to
diff --git a/indra/newview/llpaneleditwearable.cpp b/indra/newview/llpaneleditwearable.cpp
index 6573be0aaf..c601a6c210 100644
--- a/indra/newview/llpaneleditwearable.cpp
+++ b/indra/newview/llpaneleditwearable.cpp
@@ -778,7 +778,7 @@ BOOL LLPanelEditWearable::postBuild()
                         LL_WARNS() << "could not get wearable dictionary entry for wearable of type: " << type << LL_ENDL;
                         continue;
                 }
-                U8 num_subparts = wearable_entry->mSubparts.size();
+                U8 num_subparts = (U8)(wearable_entry->mSubparts.size());
         
                 for (U8 index = 0; index < num_subparts; ++index)
                 {
@@ -1181,7 +1181,7 @@ void LLPanelEditWearable::showWearable(LLViewerWearable* wearable, BOOL show, BO
                 updatePanelPickerControls(type);
 
                 // clear and rebuild visual param list
-                U8 num_subparts = wearable_entry->mSubparts.size();
+                U8 num_subparts = (U8)(wearable_entry->mSubparts.size());
         
                 for (U8 index = 0; index < num_subparts; ++index)
                 {
@@ -1372,7 +1372,7 @@ void LLPanelEditWearable::updateScrollingPanelUI()
                 const LLEditWearableDictionary::WearableEntry *wearable_entry = LLEditWearableDictionary::getInstance()->getWearable(type);
                 llassert(wearable_entry);
                 if (!wearable_entry) return;
-                U8 num_subparts = wearable_entry->mSubparts.size();
+                U8 num_subparts = (U8)(wearable_entry->mSubparts.size());
 
                 LLScrollingPanelParam::sUpdateDelayFrames = 0;
                 for (U8 index = 0; index < num_subparts; ++index)
diff --git a/indra/newview/llpanellogin.cpp b/indra/newview/llpanellogin.cpp
index 602654971a..da21d5e69a 100644
--- a/indra/newview/llpanellogin.cpp
+++ b/indra/newview/llpanellogin.cpp
@@ -337,10 +337,10 @@ LLPanelLogin::LLPanelLogin(const LLRect &rect,
 	LLButton* def_btn = getChild<LLButton>("connect_btn");
 	setDefaultBtn(def_btn);
 
-	std::string channel = LLVersionInfo::getChannel();
+	std::string channel = LLVersionInfo::instance().getChannel();
 	std::string version = llformat("%s (%d)",
-								   LLVersionInfo::getShortVersion().c_str(),
-								   LLVersionInfo::getBuild());
+								   LLVersionInfo::instance().getShortVersion().c_str(),
+								   LLVersionInfo::instance().getBuild());
 	
 	LLTextBox* forgot_password_text = getChild<LLTextBox>("forgot_password_text");
 	forgot_password_text->setClickedCallback(onClickForgotPassword, NULL);
@@ -946,9 +946,9 @@ void LLPanelLogin::loadLoginPage()
 
 	// Channel and Version
 	params["version"] = llformat("%s (%d)",
-								 LLVersionInfo::getShortVersion().c_str(),
-								 LLVersionInfo::getBuild());
-	params["channel"] = LLVersionInfo::getChannel();
+								 LLVersionInfo::instance().getShortVersion().c_str(),
+								 LLVersionInfo::instance().getBuild());
+	params["channel"] = LLVersionInfo::instance().getChannel();
 
 	// Grid
 	params["grid"] = LLGridManager::getInstance()->getGridId();
diff --git a/indra/newview/llscenemonitor.cpp b/indra/newview/llscenemonitor.cpp
index 5ab0013055..2c0c38dc75 100644
--- a/indra/newview/llscenemonitor.cpp
+++ b/indra/newview/llscenemonitor.cpp
@@ -559,16 +559,14 @@ void LLSceneMonitor::dumpToFile(std::string file_name)
 
 
 	typedef StatType<CountAccumulator> trace_count;
-	for (trace_count::instance_iter it = trace_count::beginInstances(), end_it = trace_count::endInstances();
-		it != end_it;
-		++it)
+	for (auto& it : trace_count::instance_snapshot())
 	{
 		std::ostringstream row;
 		row << std::setprecision(10);
 
-		row << it->getName();
+		row << it.getName();
 
-		const char* unit_label = it->getUnitLabel();
+		const char* unit_label = it.getUnitLabel();
 		if(unit_label[0])
 		{
 			row << "(" << unit_label << ")";
@@ -579,8 +577,8 @@ void LLSceneMonitor::dumpToFile(std::string file_name)
 		for (S32 frame = 1; frame <= frame_count; frame++)
 		{
 			Recording& recording = scene_load_recording.getPrevRecording(frame_count - frame);
-			samples += recording.getSampleCount(*it);
-			row << ", " << recording.getSum(*it);
+			samples += recording.getSampleCount(it);
+			row << ", " << recording.getSum(it);
 		}
 
 		row << '\n';
@@ -593,15 +591,13 @@ void LLSceneMonitor::dumpToFile(std::string file_name)
 
 	typedef StatType<EventAccumulator> trace_event;
 
-	for (trace_event::instance_iter it = trace_event::beginInstances(), end_it = trace_event::endInstances();
-		it != end_it;
-		++it)
+	for (auto& it : trace_event::instance_snapshot())
 	{
 		std::ostringstream row;
 		row << std::setprecision(10);
-		row << it->getName();
+		row << it.getName();
 
-		const char* unit_label = it->getUnitLabel();
+		const char* unit_label = it.getUnitLabel();
 		if(unit_label[0])
 		{
 			row << "(" << unit_label << ")";
@@ -612,8 +608,8 @@ void LLSceneMonitor::dumpToFile(std::string file_name)
 		for (S32 frame = 1; frame <= frame_count; frame++)
 		{
 			Recording& recording = scene_load_recording.getPrevRecording(frame_count - frame);
-			samples += recording.getSampleCount(*it);
-			F64 mean = recording.getMean(*it);
+			samples += recording.getSampleCount(it);
+			F64 mean = recording.getMean(it);
 			if (llisnan(mean))
 			{
 				row << ", n/a";
@@ -634,15 +630,13 @@ void LLSceneMonitor::dumpToFile(std::string file_name)
 
 	typedef StatType<SampleAccumulator> trace_sample;
 
-	for (trace_sample::instance_iter it = trace_sample::beginInstances(), end_it = trace_sample::endInstances();
-		it != end_it;
-		++it)
+	for (auto& it : trace_sample::instance_snapshot())
 	{
 		std::ostringstream row;
 		row << std::setprecision(10);
-		row << it->getName();
+		row << it.getName();
 
-		const char* unit_label = it->getUnitLabel();
+		const char* unit_label = it.getUnitLabel();
 		if(unit_label[0])
 		{
 			row << "(" << unit_label << ")";
@@ -653,8 +647,8 @@ void LLSceneMonitor::dumpToFile(std::string file_name)
 		for (S32 frame = 1; frame <= frame_count; frame++)
 		{
 			Recording& recording = scene_load_recording.getPrevRecording(frame_count - frame);
-			samples += recording.getSampleCount(*it);
-			F64 mean = recording.getMean(*it);
+			samples += recording.getSampleCount(it);
+			F64 mean = recording.getMean(it);
 			if (llisnan(mean))
 			{
 				row << ", n/a";
@@ -674,15 +668,13 @@ void LLSceneMonitor::dumpToFile(std::string file_name)
 	}
 
 	typedef StatType<MemAccumulator> trace_mem;
-	for (trace_mem::instance_iter it = trace_mem::beginInstances(), end_it = trace_mem::endInstances();
-		it != end_it;
-		++it)
+	for (auto& it : trace_mem::instance_snapshot())
 	{
-		os << it->getName() << "(KiB)";
+		os << it.getName() << "(KiB)";
 
 		for (S32 frame = 1; frame <= frame_count; frame++)
 		{
-			os << ", " << scene_load_recording.getPrevRecording(frame_count - frame).getMax(*it).valueInUnits<LLUnits::Kilobytes>();
+			os << ", " << scene_load_recording.getPrevRecording(frame_count - frame).getMax(it).valueInUnits<LLUnits::Kilobytes>();
 		}
 
 		os << '\n';
diff --git a/indra/newview/llstartup.cpp b/indra/newview/llstartup.cpp
index 4c54d44ac5..3cd0932d9c 100644
--- a/indra/newview/llstartup.cpp
+++ b/indra/newview/llstartup.cpp
@@ -511,9 +511,9 @@ bool idle_startup()
 			if(!start_messaging_system(
 				   message_template_path,
 				   port,
-				   LLVersionInfo::getMajor(),
-				   LLVersionInfo::getMinor(),
-				   LLVersionInfo::getPatch(),
+				   LLVersionInfo::instance().getMajor(),
+				   LLVersionInfo::instance().getMinor(),
+				   LLVersionInfo::instance().getPatch(),
 				   FALSE,
 				   std::string(),
 				   responder,
@@ -1537,12 +1537,14 @@ bool idle_startup()
 		{
 			LLStartUp::setStartupState( STATE_AGENT_SEND );
 		}
-		LLMessageSystem* msg = gMessageSystem;
-		while (msg->checkAllMessages(gFrameCount, gServicePump))
 		{
-			display_startup();
+			LockMessageChecker lmc(gMessageSystem);
+			while (lmc.checkAllMessages(gFrameCount, gServicePump))
+			{
+				display_startup();
+			}
+			lmc.processAcks();
 		}
-		msg->processAcks();
 		display_startup();
 		return FALSE;
 	}
@@ -1592,25 +1594,27 @@ bool idle_startup()
 	//---------------------------------------------------------------------
 	if (STATE_AGENT_WAIT == LLStartUp::getStartupState())
 	{
-		LLMessageSystem* msg = gMessageSystem;
-		while (msg->checkAllMessages(gFrameCount, gServicePump))
 		{
-			if (gAgentMovementCompleted)
-			{
-				// Sometimes we have more than one message in the
-				// queue. break out of this loop and continue
-				// processing. If we don't, then this could skip one
-				// or more login steps.
-				break;
-			}
-			else
+			LockMessageChecker lmc(gMessageSystem);
+			while (lmc.checkAllMessages(gFrameCount, gServicePump))
 			{
-				LL_DEBUGS("AppInit") << "Awaiting AvatarInitComplete, got "
-				<< msg->getMessageName() << LL_ENDL;
+				if (gAgentMovementCompleted)
+				{
+					// Sometimes we have more than one message in the
+					// queue. break out of this loop and continue
+					// processing. If we don't, then this could skip one
+					// or more login steps.
+					break;
+				}
+				else
+				{
+					LL_DEBUGS("AppInit") << "Awaiting AvatarInitComplete, got "
+										 << gMessageSystem->getMessageName() << LL_ENDL;
+				}
+				display_startup();
 			}
-			display_startup();
+			lmc.processAcks();
 		}
-		msg->processAcks();
 
 		display_startup();
 
@@ -2300,13 +2304,29 @@ void login_callback(S32 option, void *userdata)
 void show_release_notes_if_required()
 {
     static bool release_notes_shown = false;
-    if (!release_notes_shown && (LLVersionInfo::getChannelAndVersion() != gLastRunVersion)
-        && LLVersionInfo::getViewerMaturity() != LLVersionInfo::TEST_VIEWER // don't show Release Notes for the test builds
+    // We happen to know that instantiating LLVersionInfo implicitly
+    // instantiates the LLEventMailDrop named "relnotes", which we (might) use
+    // below. If viewer release notes stop working, might be because that
+    // LLEventMailDrop got moved out of LLVersionInfo and hasn't yet been
+    // instantiated.
+    if (!release_notes_shown && (LLVersionInfo::instance().getChannelAndVersion() != gLastRunVersion)
+        && LLVersionInfo::instance().getViewerMaturity() != LLVersionInfo::TEST_VIEWER // don't show Release Notes for the test builds
         && gSavedSettings.getBOOL("UpdaterShowReleaseNotes")
         && !gSavedSettings.getBOOL("FirstLoginThisInstall"))
     {
-        LLSD info(LLAppViewer::instance()->getViewerInfo());
-        LLWeb::loadURLInternal(info["VIEWER_RELEASE_NOTES_URL"]);
+        // Instantiate a "relnotes" listener which assumes any arriving event
+        // is the release notes URL string. Since "relnotes" is an
+        // LLEventMailDrop, this listener will be invoked whether or not the
+        // URL has already been posted. If so, it will fire immediately;
+        // otherwise it will fire whenever the URL is (later) posted. Either
+        // way, it will display the release notes as soon as the URL becomes
+        // available.
+        LLEventPumps::instance().obtain("relnotes").listen(
+            "showrelnotes",
+            [](const LLSD& url){
+                LLWeb::loadURLInternal(url.asString());
+                return false;
+            });
         release_notes_shown = true;
     }
 }
diff --git a/indra/newview/llstartup.h b/indra/newview/llstartup.h
index d7d294e9f4..3ec3ff4133 100644
--- a/indra/newview/llstartup.h
+++ b/indra/newview/llstartup.h
@@ -128,6 +128,7 @@ public:
 
 	static LLViewerStats::PhaseMap& getPhases() { return *sPhases; }
 private:
+	friend class LLStartupListener;
 	static LLSLURL sStartSLURL;
 
 	static std::string startupStateToString(EStartupState state);
diff --git a/indra/newview/llstartuplistener.cpp b/indra/newview/llstartuplistener.cpp
index d9a21f908e..5770b595d0 100644
--- a/indra/newview/llstartuplistener.cpp
+++ b/indra/newview/llstartuplistener.cpp
@@ -35,7 +35,7 @@
 // external library headers
 // other Linden headers
 #include "llstartup.h"
-
+#include "stringize.h"
 
 LLStartupListener::LLStartupListener(/* LLStartUp* instance */):
     LLEventAPI("LLStartUp", "Access e.g. LLStartup::postStartupState()") /* ,
@@ -43,9 +43,33 @@ LLStartupListener::LLStartupListener(/* LLStartUp* instance */):
 {
     add("postStartupState", "Refresh \"StartupState\" listeners with current startup state",
         &LLStartupListener::postStartupState);
+    add("getStateTable", "Reply with array of EStartupState string names",
+        &LLStartupListener::getStateTable);
 }
 
 void LLStartupListener::postStartupState(const LLSD&) const
 {
     LLStartUp::postStartupState();
 }
+
+void LLStartupListener::getStateTable(const LLSD& event) const
+{
+    Response response(LLSD(), event);
+
+    // This relies on our knowledge that STATE_STARTED is the very last
+    // EStartupState value. If that ever stops being true, we're going to lie
+    // without realizing it. I can think of no reliable way to test whether
+    // the enum has been extended *beyond* STATE_STARTED. We could, of course,
+    // test whether stuff has been inserted before it, by testing its
+    // numerical value against the constant value as of the last time we
+    // looked; but that's pointless, as values inserted before STATE_STARTED
+    // will continue to work fine. The bad case is if new symbols get added
+    // *after* it.
+    LLSD table;
+    // note <= comparison: we want to *include* STATE_STARTED.
+    for (LLSD::Integer istate{0}; istate <= LLSD::Integer(STATE_STARTED); ++istate)
+    {
+        table.append(LLStartUp::startupStateToString(EStartupState(istate)));
+    }
+    response["table"] = table;
+}
diff --git a/indra/newview/llstartuplistener.h b/indra/newview/llstartuplistener.h
index a35e11f6eb..0b4380a568 100644
--- a/indra/newview/llstartuplistener.h
+++ b/indra/newview/llstartuplistener.h
@@ -40,6 +40,7 @@ public:
 
 private:
     void postStartupState(const LLSD&) const;
+    void getStateTable(const LLSD&) const;
 
     //LLStartup* mStartup;
 };
diff --git a/indra/newview/lltexturestats.cpp b/indra/newview/lltexturestats.cpp
index b55b4d9ca4..8f4b7d000c 100644
--- a/indra/newview/lltexturestats.cpp
+++ b/indra/newview/lltexturestats.cpp
@@ -46,8 +46,8 @@ void send_texture_stats_to_sim(const LLSD &texture_stats)
 	LLUUID agent_id = gAgent.getID();
 	texture_stats_report["agent_id"] = agent_id;
 	texture_stats_report["region_id"] = gAgent.getRegion()->getRegionID();
-	texture_stats_report["viewer_channel"] = LLVersionInfo::getChannel();
-	texture_stats_report["viewer_version"] = LLVersionInfo::getVersion();
+	texture_stats_report["viewer_channel"] = LLVersionInfo::instance().getChannel();
+	texture_stats_report["viewer_version"] = LLVersionInfo::instance().getVersion();
 	texture_stats_report["stats_data"] = texture_stats;
 
 	std::string texture_cap_url = gAgent.getRegion()->getCapability("TextureStats");
diff --git a/indra/newview/lltoast.cpp b/indra/newview/lltoast.cpp
index 870e0d94f0..bf56a10d4d 100644
--- a/indra/newview/lltoast.cpp
+++ b/indra/newview/lltoast.cpp
@@ -612,11 +612,8 @@ S32	LLToast::notifyParent(const LLSD& info)
 //static
 void LLToast::updateClass()
 {
-	for (LLInstanceTracker<LLToast>::instance_iter iter = LLInstanceTracker<LLToast>::beginInstances(); 
-			iter != LLInstanceTracker<LLToast>::endInstances(); ) 
+	for (auto& toast : LLInstanceTracker<LLToast>::instance_snapshot())
 	{
-		LLToast& toast = *iter++;
-		
 		toast.updateHoveredState();
 	}
 }
@@ -624,22 +621,6 @@ void LLToast::updateClass()
 // static 
 void LLToast::cleanupToasts()
 {
-	LLToast * toastp = NULL;
-
-	while (LLInstanceTracker<LLToast>::instanceCount() > 0)
-	{
-		{	// Need to scope iter to allow deletion
-			LLInstanceTracker<LLToast>::instance_iter iter = LLInstanceTracker<LLToast>::beginInstances(); 
-			toastp = &(*iter);
-		}
-
-		//LL_INFOS() << "Cleaning up toast id " << toastp->getNotificationID() << LL_ENDL;
-
-		// LLToast destructor will remove it from the LLInstanceTracker.
-		if (!toastp)
-			break;		// Don't get stuck in the loop if a null pointer somehow got on the list
-
-		delete toastp;
-	}
+	LLInstanceTracker<LLToast>::instance_snapshot().deleteAll();
 }
 
diff --git a/indra/newview/lltranslate.cpp b/indra/newview/lltranslate.cpp
index e424983cf8..fa3b44f702 100644
--- a/indra/newview/lltranslate.cpp
+++ b/indra/newview/lltranslate.cpp
@@ -134,11 +134,11 @@ void LLTranslationAPIHandler::verifyKeyCoro(LLTranslate::EService service, std::
 
 
     std::string user_agent = llformat("%s %d.%d.%d (%d)",
-        LLVersionInfo::getChannel().c_str(),
-        LLVersionInfo::getMajor(),
-        LLVersionInfo::getMinor(),
-        LLVersionInfo::getPatch(),
-        LLVersionInfo::getBuild());
+        LLVersionInfo::instance().getChannel().c_str(),
+        LLVersionInfo::instance().getMajor(),
+        LLVersionInfo::instance().getMinor(),
+        LLVersionInfo::instance().getPatch(),
+        LLVersionInfo::instance().getBuild());
 
     httpHeaders->append(HTTP_OUT_HEADER_ACCEPT, HTTP_CONTENT_TEXT_PLAIN);
     httpHeaders->append(HTTP_OUT_HEADER_USER_AGENT, user_agent);
@@ -177,11 +177,11 @@ void LLTranslationAPIHandler::translateMessageCoro(LanguagePair_t fromTo, std::s
 
 
     std::string user_agent = llformat("%s %d.%d.%d (%d)",
-        LLVersionInfo::getChannel().c_str(),
-        LLVersionInfo::getMajor(),
-        LLVersionInfo::getMinor(),
-        LLVersionInfo::getPatch(),
-        LLVersionInfo::getBuild());
+        LLVersionInfo::instance().getChannel().c_str(),
+        LLVersionInfo::instance().getMajor(),
+        LLVersionInfo::instance().getMinor(),
+        LLVersionInfo::instance().getPatch(),
+        LLVersionInfo::instance().getBuild());
 
     httpHeaders->append(HTTP_OUT_HEADER_ACCEPT, HTTP_CONTENT_TEXT_PLAIN);
     httpHeaders->append(HTTP_OUT_HEADER_USER_AGENT, user_agent);
diff --git a/indra/newview/llversioninfo.cpp b/indra/newview/llversioninfo.cpp
index 4e07223784..4720a989b0 100644
--- a/indra/newview/llversioninfo.cpp
+++ b/indra/newview/llversioninfo.cpp
@@ -26,9 +26,10 @@
  */
 
 #include "llviewerprecompiledheaders.h"
-#include <iostream>
-#include <sstream>
+#include "llevents.h"
+#include "lleventfilter.h"
 #include "llversioninfo.h"
+#include "stringize.h"
 #include <boost/regex.hpp>
 
 #if ! defined(LL_VIEWER_CHANNEL)       \
@@ -43,100 +44,90 @@
 // Set the version numbers in indra/VIEWER_VERSION
 //
 
-//static
+LLVersionInfo::LLVersionInfo():
+	short_version(STRINGIZE(LL_VIEWER_VERSION_MAJOR << "."
+							<< LL_VIEWER_VERSION_MINOR << "."
+							<< LL_VIEWER_VERSION_PATCH)),
+	// LL_VIEWER_CHANNEL is a macro defined on the compiler command line. The
+	// macro expands to the string name of the channel, but without quotes. We
+	// need to turn it into a quoted string. LL_TO_STRING() does that.
+	mWorkingChannelName(LL_TO_STRING(LL_VIEWER_CHANNEL)),
+	build_configuration(LLBUILD_CONFIG), // set in indra/cmake/BuildVersion.cmake
+	// instantiate an LLEventMailDrop with canonical name to listen for news
+	// from SLVersionChecker
+	mPump{new LLEventMailDrop("relnotes")},
+	// immediately listen on mPump, store arriving URL into mReleaseNotes
+	mStore{new LLStoreListener<std::string>(*mPump, mReleaseNotes)}
+{
+}
+
+void LLVersionInfo::initSingleton()
+{
+	// We override initSingleton() not because we have dependencies on other
+	// LLSingletons, but because certain initializations call other member
+	// functions. We should refrain from calling methods until this object is
+	// fully constructed; such calls don't really belong in the constructor.
+
+	// cache the version string
+	version = STRINGIZE(getShortVersion() << "." << getBuild());
+}
+
+LLVersionInfo::~LLVersionInfo()
+{
+}
+
 S32 LLVersionInfo::getMajor()
 {
 	return LL_VIEWER_VERSION_MAJOR;
 }
 
-//static
 S32 LLVersionInfo::getMinor()
 {
 	return LL_VIEWER_VERSION_MINOR;
 }
 
-//static
 S32 LLVersionInfo::getPatch()
 {
 	return LL_VIEWER_VERSION_PATCH;
 }
 
-//static
 S32 LLVersionInfo::getBuild()
 {
 	return LL_VIEWER_VERSION_BUILD;
 }
 
-//static
-const std::string &LLVersionInfo::getVersion()
+std::string LLVersionInfo::getVersion()
 {
-	static std::string version("");
-	if (version.empty())
-	{
-		std::ostringstream stream;
-		stream << LLVersionInfo::getShortVersion() << "." << LLVersionInfo::getBuild();
-		// cache the version string
-		version = stream.str();
-	}
 	return version;
 }
 
-//static
-const std::string &LLVersionInfo::getShortVersion()
+std::string LLVersionInfo::getShortVersion()
 {
-	static std::string short_version("");
-	if(short_version.empty())
-	{
-		// cache the version string
-		std::ostringstream stream;
-		stream << LL_VIEWER_VERSION_MAJOR << "."
-		       << LL_VIEWER_VERSION_MINOR << "."
-		       << LL_VIEWER_VERSION_PATCH;
-		short_version = stream.str();
-	}
 	return short_version;
 }
 
-namespace
-{
-	// LL_VIEWER_CHANNEL is a macro defined on the compiler command line. The
-	// macro expands to the string name of the channel, but without quotes. We
-	// need to turn it into a quoted string. LL_TO_STRING() does that.
-	/// Storage of the channel name the viewer is using.
-	//  The channel name is set by hardcoded constant, 
-	//  or by calling LLVersionInfo::resetChannel()
-	std::string sWorkingChannelName(LL_TO_STRING(LL_VIEWER_CHANNEL));
-
-	// Storage for the "version and channel" string.
-	// This will get reset too.
-	std::string sVersionChannel("");
-}
-
-//static
-const std::string &LLVersionInfo::getChannelAndVersion()
+std::string LLVersionInfo::getChannelAndVersion()
 {
-	if (sVersionChannel.empty())
+	if (mVersionChannel.empty())
 	{
 		// cache the version string
-		sVersionChannel = LLVersionInfo::getChannel() + " " + LLVersionInfo::getVersion();
+		mVersionChannel = getChannel() + " " + getVersion();
 	}
 
-	return sVersionChannel;
+	return mVersionChannel;
 }
 
-//static
-const std::string &LLVersionInfo::getChannel()
+std::string LLVersionInfo::getChannel()
 {
-	return sWorkingChannelName;
+	return mWorkingChannelName;
 }
 
 void LLVersionInfo::resetChannel(const std::string& channel)
 {
-	sWorkingChannelName = channel;
-	sVersionChannel.clear(); // Reset version and channel string til next use.
+	mWorkingChannelName = channel;
+	mVersionChannel.clear(); // Reset version and channel string til next use.
 }
 
-//static
 LLVersionInfo::ViewerMaturity LLVersionInfo::getViewerMaturity()
 {
     ViewerMaturity maturity;
@@ -175,8 +166,12 @@ LLVersionInfo::ViewerMaturity LLVersionInfo::getViewerMaturity()
 }
 
     
-const std::string &LLVersionInfo::getBuildConfig()
+std::string LLVersionInfo::getBuildConfig()
 {
-    static const std::string build_configuration(LLBUILD_CONFIG); // set in indra/cmake/BuildVersion.cmake
     return build_configuration;
 }
+
+std::string LLVersionInfo::getReleaseNotes()
+{
+    return mReleaseNotes;
+}
diff --git a/indra/newview/llversioninfo.h b/indra/newview/llversioninfo.h
index b8b4341385..02ff0c094a 100644
--- a/indra/newview/llversioninfo.h
+++ b/indra/newview/llversioninfo.h
@@ -28,8 +28,14 @@
 #ifndef LL_LLVERSIONINFO_H
 #define LL_LLVERSIONINFO_H
 
-#include <string>
 #include "stdtypes.h"
+#include "llsingleton.h"
+#include <string>
+#include <memory>
+
+class LLEventMailDrop;
+template <typename T>
+class LLStoreListener;
 
 ///
 /// This API provides version information for the viewer.  This
@@ -38,42 +44,46 @@
 /// viewer code that wants to query the current version should 
 /// use this API.
 ///
-class LLVersionInfo
+class LLVersionInfo: public LLSingleton<LLVersionInfo>
 {
+	LLSINGLETON(LLVersionInfo);
+	void initSingleton();
 public:
-	/// return the major verion number as an integer
-	static S32 getMajor();
+	~LLVersionInfo();
 
-	/// return the minor verion number as an integer
-	static S32 getMinor();
+	/// return the major version number as an integer
+	S32 getMajor();
 
-	/// return the patch verion number as an integer
-	static S32 getPatch();
+	/// return the minor version number as an integer
+	S32 getMinor();
+
+	/// return the patch version number as an integer
+	S32 getPatch();
 
 	/// return the build number as an integer
-	static S32 getBuild();
+	S32 getBuild();
 
 	/// return the full viewer version as a string like "2.0.0.200030"
-	static const std::string &getVersion();
+	std::string getVersion();
 
 	/// return the viewer version as a string like "2.0.0"
-	static const std::string &getShortVersion();
+	std::string getShortVersion();
 
 	/// return the viewer version and channel as a string
 	/// like "Second Life Release 2.0.0.200030"
-	static const std::string &getChannelAndVersion();
+	std::string getChannelAndVersion();
 
 	/// return the channel name, e.g. "Second Life"
-	static const std::string &getChannel();
+	std::string getChannel();
 	
     /// return the CMake build type
-    static const std::string &getBuildConfig();
+    std::string getBuildConfig();
 
 	/// reset the channel name used by the viewer.
-	static void resetChannel(const std::string& channel);
+	void resetChannel(const std::string& channel);
 
     /// return the bit width of an address
-    static const S32 getAddressSize() { return ADDRESS_SIZE; }
+    S32 getAddressSize() { return ADDRESS_SIZE; }
 
     typedef enum
     {
@@ -82,7 +92,31 @@ public:
         BETA_VIEWER,
         RELEASE_VIEWER
     } ViewerMaturity;
-    static ViewerMaturity getViewerMaturity();
+    ViewerMaturity getViewerMaturity();
+
+	/// get the release-notes URL, once it becomes available -- until then,
+	/// return empty string
+	std::string getReleaseNotes();
+
+private:
+	std::string version;
+	std::string short_version;
+	/// Storage of the channel name the viewer is using.
+	//  The channel name is set by hardcoded constant, 
+	//  or by calling resetChannel()
+	std::string mWorkingChannelName;
+	// Storage for the "version and channel" string.
+	// This will get reset too.
+	std::string mVersionChannel;
+	std::string build_configuration;
+	std::string mReleaseNotes;
+	// Store unique_ptrs to the next couple things so we don't have to explain
+	// to every consumer of this header file all the details of each.
+	// mPump is the LLEventMailDrop on which we listen for SLVersionChecker to
+	// post the release-notes URL from the Viewer Version Manager.
+	std::unique_ptr<LLEventMailDrop> mPump;
+	// mStore is an adapter that stores the release-notes URL in mReleaseNotes.
+	std::unique_ptr<LLStoreListener<std::string>> mStore;
 };
 
 #endif
diff --git a/indra/newview/llviewercontrollistener.cpp b/indra/newview/llviewercontrollistener.cpp
index d2484b2b23..3443bb644a 100644
--- a/indra/newview/llviewercontrollistener.cpp
+++ b/indra/newview/llviewercontrollistener.cpp
@@ -50,11 +50,9 @@ LLViewerControlListener::LLViewerControlListener()
 	std::ostringstream groupnames;
 	groupnames << "[\"group\"] is one of ";
 	const char* delim = "";
-	for (LLControlGroup::key_iter cgki(LLControlGroup::beginKeys()),
-								  cgkend(LLControlGroup::endKeys());
-		 cgki != cgkend; ++cgki)
+	for (const auto& key : LLControlGroup::key_snapshot())
 	{
-		groupnames << delim << '"' << *cgki << '"';
+		groupnames << delim << '"' << key << '"';
 		delim = ", ";
 	}
 	groupnames << '\n';
@@ -181,11 +179,9 @@ void LLViewerControlListener::groups(LLSD const & request)
 {
 	// No Info, we're not looking up either a group or a control name.
 	Response response(LLSD(), request);
-	for (LLControlGroup::key_iter cgki(LLControlGroup::beginKeys()),
-								  cgkend(LLControlGroup::endKeys());
-		 cgki != cgkend; ++cgki)
+	for (const auto& key : LLControlGroup::key_snapshot())
 	{
-		response["groups"].append(*cgki);
+		response["groups"].append(key);
 	}
 }
 
diff --git a/indra/newview/llviewerjoystick.cpp b/indra/newview/llviewerjoystick.cpp
index e44d80b7ce..3d06c95080 100644
--- a/indra/newview/llviewerjoystick.cpp
+++ b/indra/newview/llviewerjoystick.cpp
@@ -62,6 +62,43 @@ F32  LLViewerJoystick::sDelta[] = {0,0,0,0,0,0,0};
 #define MAX_SPACENAVIGATOR_INPUT  3000.0f
 #define MAX_JOYSTICK_INPUT_VALUE  MAX_SPACENAVIGATOR_INPUT
 
+#if LIB_NDOF
+std::ostream& operator<<(std::ostream& out, NDOF_Device* ptr)
+{
+    if (! ptr)
+    {
+        return out << "nullptr";
+    }
+    out << "NDOF_Device{ ";
+    out << "axes [";
+    const char* delim = "";
+    for (short axis = 0; axis < ptr->axes_count; ++axis)
+    {
+        out << delim << ptr->axes[axis];
+        delim = ", ";
+    }
+    out << "]";
+    out << ", buttons [";
+    delim = "";
+    for (short button = 0; button < ptr->btn_count; ++button)
+    {
+        out << delim << ptr->buttons[button];
+        delim = ", ";
+    }
+    out << "]";
+    out << ", range " << ptr->axes_min << ':' << ptr->axes_max;
+    // If we don't coerce these to unsigned, they're streamed as characters,
+    // e.g. ctrl-A or nul.
+    out << ", absolute " << unsigned(ptr->absolute);
+    out << ", valid " << unsigned(ptr->valid);
+    out << ", manufacturer '" << ptr->manufacturer << "'";
+    out << ", product '" << ptr->product << "'";
+    out << ", private " << ptr->private_data;
+    out << " }";
+    return out;
+}
+#endif // LIB_NDOF
+
 // -----------------------------------------------------------------------------
 void LLViewerJoystick::updateEnabled(bool autoenable)
 {
@@ -107,11 +144,11 @@ NDOF_HotPlugResult LLViewerJoystick::HotPlugAddCallback(NDOF_Device *dev)
 	LLViewerJoystick* joystick(LLViewerJoystick::getInstance());
 	if (joystick->mDriverState == JDS_UNINITIALIZED)
 	{
-        LL_INFOS() << "HotPlugAddCallback: will use device:" << LL_ENDL;
-		ndof_dump(dev);
+		LL_INFOS("joystick") << "HotPlugAddCallback: will use device:" << LL_ENDL;
+		ndof_dump(stderr, dev);
 		joystick->mNdofDev = dev;
-        joystick->mDriverState = JDS_INITIALIZED;
-        res = NDOF_KEEP_HOTPLUGGED;
+		joystick->mDriverState = JDS_INITIALIZED;
+		res = NDOF_KEEP_HOTPLUGGED;
 	}
 	joystick->updateEnabled(true);
     return res;
@@ -125,9 +162,9 @@ void LLViewerJoystick::HotPlugRemovalCallback(NDOF_Device *dev)
 	LLViewerJoystick* joystick(LLViewerJoystick::getInstance());
 	if (joystick->mNdofDev == dev)
 	{
-        LL_INFOS() << "HotPlugRemovalCallback: joystick->mNdofDev=" 
+		LL_INFOS("joystick") << "HotPlugRemovalCallback: joystick->mNdofDev=" 
 				<< joystick->mNdofDev << "; removed device:" << LL_ENDL;
-		ndof_dump(dev);
+		ndof_dump(stderr, dev);
 		joystick->mDriverState = JDS_UNINITIALIZED;
 	}
 	joystick->updateEnabled(true);
@@ -193,6 +230,7 @@ void LLViewerJoystick::init(bool autoenable)
 	{
 		if (mNdofDev)
 		{
+			LL_DEBUGS("joystick") << "ndof_create() returned: " << mNdofDev << LL_ENDL;
 			// Different joysticks will return different ranges of raw values.
 			// Since we want to handle every device in the same uniform way, 
 			// we initialize the mNdofDev struct and we set the range 
@@ -211,16 +249,19 @@ void LLViewerJoystick::init(bool autoenable)
 			// just have the absolute values instead.
 			mNdofDev->absolute = 1;
 
+			LL_DEBUGS("joystick") << "ndof_init_first() received: " << mNdofDev << LL_ENDL;
 			// init & use the first suitable NDOF device found on the USB chain
 			if (ndof_init_first(mNdofDev, NULL))
 			{
 				mDriverState = JDS_UNINITIALIZED;
-				LL_WARNS() << "ndof_init_first FAILED" << LL_ENDL;
+				LL_WARNS("joystick") << "ndof_init_first FAILED" << LL_ENDL;
+				ndof_dump_list(stderr);
 			}
 			else
 			{
 				mDriverState = JDS_INITIALIZED;
 			}
+			LL_DEBUGS("joystick") << "ndof_init_first() left: " << mNdofDev << LL_ENDL;
 		}
 		else
 		{
@@ -258,8 +299,8 @@ void LLViewerJoystick::init(bool autoenable)
 	{
 		// No device connected, don't change any settings
 	}
-	
-	LL_INFOS() << "ndof: mDriverState=" << mDriverState << "; mNdofDev=" 
+
+	LL_INFOS("joystick") << "ndof: mDriverState=" << mDriverState << "; mNdofDev=" 
 			<< mNdofDev << "; libinit=" << libinit << LL_ENDL;
 #endif
 }
@@ -270,7 +311,7 @@ void LLViewerJoystick::terminate()
 #if LIB_NDOF
 
 	ndof_libcleanup();
-	LL_INFOS() << "Terminated connection with NDOF device." << LL_ENDL;
+	LL_INFOS("joystick") << "Terminated connection with NDOF device." << LL_ENDL;
 	mDriverState = JDS_UNINITIALIZED;
 #endif
 }
@@ -1075,7 +1116,7 @@ std::string LLViewerJoystick::getDescription()
 
 bool LLViewerJoystick::isLikeSpaceNavigator() const
 {
-#if LIB_NDOF	
+#if LIB_NDOF
 	return (isJoystickInitialized() 
 			&& (strncmp(mNdofDev->product, "SpaceNavigator", 14) == 0
 				|| strncmp(mNdofDev->product, "SpaceExplorer", 13) == 0
@@ -1099,10 +1140,10 @@ void LLViewerJoystick::setSNDefaults()
 	const float platformScaleAvXZ = 2.f;
 	const bool is_3d_cursor = true;
 #endif
-	
+
 	//gViewerWindow->alertXml("CacheWillClear");
-	LL_INFOS() << "restoring SpaceNavigator defaults..." << LL_ENDL;
-	
+	LL_INFOS("joystick") << "restoring SpaceNavigator defaults..." << LL_ENDL;
+
 	gSavedSettings.setS32("JoystickAxis0", 1); // z (at)
 	gSavedSettings.setS32("JoystickAxis1", 0); // x (slide)
 	gSavedSettings.setS32("JoystickAxis2", 2); // y (up)
@@ -1110,11 +1151,11 @@ void LLViewerJoystick::setSNDefaults()
 	gSavedSettings.setS32("JoystickAxis4", 3); // roll 
 	gSavedSettings.setS32("JoystickAxis5", 5); // yaw
 	gSavedSettings.setS32("JoystickAxis6", -1);
-	
+
 	gSavedSettings.setBOOL("Cursor3D", is_3d_cursor);
 	gSavedSettings.setBOOL("AutoLeveling", true);
 	gSavedSettings.setBOOL("ZoomDirect", false);
-	
+
 	gSavedSettings.setF32("AvatarAxisScale0", 1.f * platformScaleAvXZ);
 	gSavedSettings.setF32("AvatarAxisScale1", 1.f * platformScaleAvXZ);
 	gSavedSettings.setF32("AvatarAxisScale2", 1.f);
diff --git a/indra/newview/llviewermedia.cpp b/indra/newview/llviewermedia.cpp
index 79081f3e02..c36d877a59 100644
--- a/indra/newview/llviewermedia.cpp
+++ b/indra/newview/llviewermedia.cpp
@@ -412,7 +412,7 @@ std::string LLViewerMedia::getCurrentUserAgent()
 
 	// Just in case we need to check browser differences in A/B test
 	// builds.
-	std::string channel = LLVersionInfo::getChannel();
+	std::string channel = LLVersionInfo::instance().getChannel();
 
 	// append our magic version number string to the browser user agent id
 	// See the HTTP 1.0 and 1.1 specifications for allowed formats:
@@ -422,7 +422,7 @@ std::string LLViewerMedia::getCurrentUserAgent()
 	// http://www.mozilla.org/build/revised-user-agent-strings.html
 	std::ostringstream codec;
 	codec << "SecondLife/";
-	codec << LLVersionInfo::getVersion();
+	codec << LLVersionInfo::instance().getVersion();
 	codec << " (" << channel << "; " << skin_name << " skin)";
 	LL_INFOS() << codec.str() << LL_ENDL;
 
diff --git a/indra/newview/llviewerprecompiledheaders.h b/indra/newview/llviewerprecompiledheaders.h
index 999d9092bd..bbbacce8fa 100644
--- a/indra/newview/llviewerprecompiledheaders.h
+++ b/indra/newview/llviewerprecompiledheaders.h
@@ -29,6 +29,8 @@
 #ifndef LL_LLVIEWERPRECOMPILEDHEADERS_H
 #define LL_LLVIEWERPRECOMPILEDHEADERS_H
 
+#include "llwin32headers.h"
+
 // This file MUST be the first one included by each .cpp file
 // in viewer.
 // It is used to precompile headers for improved build speed.
diff --git a/indra/newview/llviewerstats.cpp b/indra/newview/llviewerstats.cpp
index 04172adde9..f7ded00318 100644
--- a/indra/newview/llviewerstats.cpp
+++ b/indra/newview/llviewerstats.cpp
@@ -472,7 +472,7 @@ void send_stats()
 
 	// send fps only for time app spends in foreground
 	agent["fps"] = (F32)gForegroundFrameCount / gForegroundTime.getElapsedTimeF32();
-	agent["version"] = LLVersionInfo::getChannelAndVersion();
+	agent["version"] = LLVersionInfo::instance().getChannelAndVersion();
 	std::string language = LLUI::getLanguage();
 	agent["language"] = language;
 	
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index 1fbb32ac5e..0cc1e0df06 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -2498,7 +2498,7 @@ void LLViewerWindow::setMenuBackgroundColor(bool god_mode, bool dev_grid)
     }
     else
     {
-        switch (LLVersionInfo::getViewerMaturity())
+        switch (LLVersionInfo::instance().getViewerMaturity())
         {
         case LLVersionInfo::TEST_VIEWER:
             new_bg_color = LLUIColorTable::instance().getColor( "MenuBarTestBgColor" );
diff --git a/indra/newview/llvoicevivox.cpp b/indra/newview/llvoicevivox.cpp
index 530adb8975..42a1cf95a7 100644
--- a/indra/newview/llvoicevivox.cpp
+++ b/indra/newview/llvoicevivox.cpp
@@ -338,15 +338,15 @@ LLVivoxVoiceClient::LLVivoxVoiceClient() :
 	mPlayRequestCount(0),
 
 	mAvatarNameCacheConnection(),
-    mIsInTuningMode(false),
-    mIsInChannel(false),
-    mIsJoiningSession(false),
-    mIsWaitingForFonts(false),
-    mIsLoggingIn(false),
-    mIsLoggedIn(false),
-    mIsProcessingChannels(false),
-    mIsCoroutineActive(false),
-    mVivoxPump("vivoxClientPump")
+	mIsInTuningMode(false),
+	mIsInChannel(false),
+	mIsJoiningSession(false),
+	mIsWaitingForFonts(false),
+	mIsLoggingIn(false),
+	mIsLoggedIn(false),
+	mIsProcessingChannels(false),
+	mIsCoroutineActive(false),
+	mVivoxPump("vivoxClientPump")
 {	
 	mSpeakerVolume = scale_speaker_volume(0);
 
@@ -390,7 +390,7 @@ void LLVivoxVoiceClient::init(LLPumpIO *pump)
 	// constructor will set up LLVoiceClient::getInstance()
 	LLVivoxVoiceClient::getInstance()->mPump = pump;
 
-//     LLCoros::instance().launch("LLVivoxVoiceClient::voiceControlCoro();",
+//     LLCoros::instance().launch("LLVivoxVoiceClient::voiceControlCoro",
 //         boost::bind(&LLVivoxVoiceClient::voiceControlCoro, LLVivoxVoiceClient::getInstance()));
 
 }
@@ -527,7 +527,7 @@ void LLVivoxVoiceClient::connectorCreate()
 		<< "<FileNameSuffix>.log</FileNameSuffix>"
 		<< "<LogLevel>" << vivoxLogLevel << "</LogLevel>"
 		<< "</Logging>"
-		<< "<Application>" << LLVersionInfo::getChannel().c_str() << " " << LLVersionInfo::getVersion().c_str() << "</Application>"
+		<< "<Application>" << LLVersionInfo::instance().getChannel() << " " << LLVersionInfo::instance().getVersion() << "</Application>"
 		//<< "<Application></Application>"  //Name can cause problems per vivox.
 		<< "<MaxCalls>12</MaxCalls>"
 		<< "</Request>\n\n\n";
@@ -806,6 +806,21 @@ bool LLVivoxVoiceClient::startAndLaunchDaemon()
             LLProcess::Params params;
             params.executable = exe_path;
 
+            // VOICE-88: Cycle through [portbase..portbase+portrange) on
+            // successive tries because attempting to relaunch (after manually
+            // disabling and then re-enabling voice) with the same port can
+            // cause SLVoice's bind() call to fail with EADDRINUSE. We expect
+            // that eventually the OS will time out previous ports, which is
+            // why we cycle instead of incrementing indefinitely.
+            U32 portbase = gSavedSettings.getU32("VivoxVoicePort");
+            static U32 portoffset = 0;
+            static const U32 portrange = 100;
+            std::string host(gSavedSettings.getString("VivoxVoiceHost"));
+            U32 port = portbase + portoffset;
+            portoffset = (portoffset + 1) % portrange;
+            params.args.add("-i");
+            params.args.add(STRINGIZE(host << ':' << port));
+
             std::string loglevel = gSavedSettings.getString("VivoxDebugLevel");
             if (loglevel.empty())
             {
@@ -862,7 +877,7 @@ bool LLVivoxVoiceClient::startAndLaunchDaemon()
 
             sGatewayPtr = LLProcess::create(params);
 
-            mDaemonHost = LLHost(gSavedSettings.getString("VivoxVoiceHost").c_str(), gSavedSettings.getU32("VivoxVoicePort"));
+            mDaemonHost = LLHost(host.c_str(), port);
         }
         else
         {
@@ -1038,8 +1053,6 @@ bool LLVivoxVoiceClient::provisionVoiceAccount()
 
 bool LLVivoxVoiceClient::establishVoiceConnection()
 {
-    LLEventPump &voiceConnectPump = LLEventPumps::instance().obtain("vivoxClientPump");
-
     if (!mVoiceEnabled && mIsInitialized)
     {
         LL_WARNS("Voice") << "cannot establish connection; enabled "<<mVoiceEnabled<<" initialized "<<mIsInitialized<<LL_ENDL;
@@ -1056,7 +1069,7 @@ bool LLVivoxVoiceClient::establishVoiceConnection()
     connectorCreate();
     do
     {
-        result = llcoro::suspendUntilEventOn(voiceConnectPump);
+        result = llcoro::suspendUntilEventOn(mVivoxPump);
         LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
 
         if (result.has("connector"))
@@ -1108,7 +1121,6 @@ bool LLVivoxVoiceClient::establishVoiceConnection()
 bool LLVivoxVoiceClient::breakVoiceConnection(bool corowait)
 {
     LL_DEBUGS("Voice") << "( wait=" << corowait << ")" << LL_ENDL;
-    LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
     bool retval(true);
 
     mShutdownComplete = false;
@@ -1118,7 +1130,7 @@ bool LLVivoxVoiceClient::breakVoiceConnection(bool corowait)
     {
         LLSD timeoutResult(LLSDMap("connector", "timeout"));
 
-        LLSD result = llcoro::suspendUntilEventOnWithTimeout(voicePump, LOGOUT_ATTEMPT_TIMEOUT, timeoutResult);
+        LLSD result = llcoro::suspendUntilEventOnWithTimeout(mVivoxPump, LOGOUT_ATTEMPT_TIMEOUT, timeoutResult);
         LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
 
         retval = result.has("connector");
@@ -1140,7 +1152,7 @@ bool LLVivoxVoiceClient::breakVoiceConnection(bool corowait)
             {
                 mConnected = false;
                 LLSD vivoxevent(LLSDMap("connector", LLSD::Boolean(false)));
-                LLEventPumps::instance().post("vivoxClientPump", vivoxevent);
+                mVivoxPump.post(vivoxevent);
             }
             mShutdownComplete = true;
         }
@@ -1157,8 +1169,6 @@ bool LLVivoxVoiceClient::breakVoiceConnection(bool corowait)
 
 bool LLVivoxVoiceClient::loginToVivox()
 {
-    LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
-
     LLSD timeoutResult(LLSDMap("login", "timeout"));
 
     int loginRetryCount(0);
@@ -1176,7 +1186,7 @@ bool LLVivoxVoiceClient::loginToVivox()
             send_login = false;
         }
         
-        LLSD result = llcoro::suspendUntilEventOnWithTimeout(voicePump, LOGIN_ATTEMPT_TIMEOUT, timeoutResult);
+        LLSD result = llcoro::suspendUntilEventOnWithTimeout(mVivoxPump, LOGIN_ATTEMPT_TIMEOUT, timeoutResult);
         LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
 
         if (result.has("login"))
@@ -1259,17 +1269,23 @@ void LLVivoxVoiceClient::logoutOfVivox(bool wait)
 
         if (wait)
         {
-            LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
             LLSD timeoutResult(LLSDMap("logout", "timeout"));
+            LLSD result;
 
-            LL_DEBUGS("Voice")
-                << "waiting for logout response on "
-                << voicePump.getName()
-                << LL_ENDL;
-
-            LLSD result = llcoro::suspendUntilEventOnWithTimeout(voicePump, LOGOUT_ATTEMPT_TIMEOUT, timeoutResult);
-
-            LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
+            do
+            {
+                LL_DEBUGS("Voice")
+                    << "waiting for logout response on "
+                    << mVivoxPump.getName()
+                    << LL_ENDL;
+
+                result = llcoro::suspendUntilEventOnWithTimeout(mVivoxPump, LOGOUT_ATTEMPT_TIMEOUT, timeoutResult);
+
+                LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
+                // Don't get confused by prior queued events -- note that it's
+                // very important that mVivoxPump is an LLEventMailDrop, which
+                // does queue events.
+            } while (! result["logout"]);
         }
         else
         {
@@ -1283,8 +1299,6 @@ void LLVivoxVoiceClient::logoutOfVivox(bool wait)
 
 bool LLVivoxVoiceClient::retrieveVoiceFonts()
 {
-    LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
-
     // Request the set of available voice fonts.
     refreshVoiceEffectLists(true);
 
@@ -1292,7 +1306,7 @@ bool LLVivoxVoiceClient::retrieveVoiceFonts()
     LLSD result;
     do 
     {
-        result = llcoro::suspendUntilEventOn(voicePump);
+        result = llcoro::suspendUntilEventOn(mVivoxPump);
 
         LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
         if (result.has("voice_fonts"))
@@ -1408,7 +1422,6 @@ bool LLVivoxVoiceClient::requestParcelVoiceInfo()
 
 bool LLVivoxVoiceClient::addAndJoinSession(const sessionStatePtr_t &nextSession)
 {
-    LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
     mIsJoiningSession = true;
 
     sessionStatePtr_t oldSession = mAudioSession;
@@ -1497,7 +1510,7 @@ bool LLVivoxVoiceClient::addAndJoinSession(const sessionStatePtr_t &nextSession)
     // We are about to start a whole new session.  Anything that MIGHT still be in our 
     // maildrop is going to be stale and cause us much wailing and gnashing of teeth.  
     // Just flush it all out and start new.
-    voicePump.flush();
+    mVivoxPump.discard();
 
     // It appears that I need to wait for BOTH the SessionGroup.AddSession response and the SessionStateChangeEvent with state 4
     // before continuing from this state.  They can happen in either order, and if I don't wait for both, things can get stuck.
@@ -1505,7 +1518,7 @@ bool LLVivoxVoiceClient::addAndJoinSession(const sessionStatePtr_t &nextSession)
     // This is a cheap way to make sure both have happened before proceeding.
     do
     {
-        result = llcoro::suspendUntilEventOnWithTimeout(voicePump, SESSION_JOIN_TIMEOUT, timeoutResult);
+        result = llcoro::suspendUntilEventOnWithTimeout(mVivoxPump, SESSION_JOIN_TIMEOUT, timeoutResult);
 
         LL_INFOS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
         if (result.has("session"))
@@ -1619,13 +1632,12 @@ bool LLVivoxVoiceClient::terminateAudioSession(bool wait)
 
                 if (wait)
                 {
-                    LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
                     LLSD result;
                     do
                     {
                         LLSD timeoutResult(LLSDMap("session", "timeout"));
 
-                        result = llcoro::suspendUntilEventOnWithTimeout(voicePump, LOGOUT_ATTEMPT_TIMEOUT, timeoutResult);
+                        result = llcoro::suspendUntilEventOnWithTimeout(mVivoxPump, LOGOUT_ATTEMPT_TIMEOUT, timeoutResult);
 
                         LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
                         if (result.has("session"))
@@ -1822,7 +1834,6 @@ bool LLVivoxVoiceClient::runSession(const sessionStatePtr_t &session)
 
     LLSD timeoutEvent(LLSDMap("timeout", LLSD::Boolean(true)));
 
-    LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
     mIsInChannel = true;
     mMuteMicDirty = true;
 
@@ -1874,7 +1885,7 @@ bool LLVivoxVoiceClient::runSession(const sessionStatePtr_t &session)
         sendLocalAudioUpdates();
 
         mIsInitialized = true;
-        LLSD result = llcoro::suspendUntilEventOnWithTimeout(voicePump, UPDATE_THROTTLE_SECONDS, timeoutEvent);
+        LLSD result = llcoro::suspendUntilEventOnWithTimeout(mVivoxPump, UPDATE_THROTTLE_SECONDS, timeoutEvent);
         if (!result.has("timeout")) // logging the timeout event spams the log
         {
             LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
@@ -1945,14 +1956,13 @@ void LLVivoxVoiceClient::sendCaptureAndRenderDevices()
 void LLVivoxVoiceClient::recordingAndPlaybackMode()
 {
     LL_INFOS("Voice") << "In voice capture/playback mode." << LL_ENDL;
-    LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
 
     while (true)
     {
         LLSD command;
         do
         {
-            command = llcoro::suspendUntilEventOn(voicePump);
+            command = llcoro::suspendUntilEventOn(mVivoxPump);
             LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(command) << LL_ENDL;
         } while (!command.has("recplay"));
 
@@ -1985,7 +1995,6 @@ int LLVivoxVoiceClient::voiceRecordBuffer()
 
     LL_INFOS("Voice") << "Recording voice buffer" << LL_ENDL;
 
-    LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
     LLSD result;
 
     captureBufferRecordStartSendMessage();
@@ -1993,7 +2002,7 @@ int LLVivoxVoiceClient::voiceRecordBuffer()
 
     do
     {
-        result = llcoro::suspendUntilEventOnWithTimeout(voicePump, CAPTURE_BUFFER_MAX_TIME, timeoutResult);
+        result = llcoro::suspendUntilEventOnWithTimeout(mVivoxPump, CAPTURE_BUFFER_MAX_TIME, timeoutResult);
         LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
     } while (!result.has("recplay"));
 
@@ -2015,7 +2024,6 @@ int LLVivoxVoiceClient::voicePlaybackBuffer()
 
     LL_INFOS("Voice") << "Playing voice buffer" << LL_ENDL;
 
-    LLEventPump &voicePump = LLEventPumps::instance().obtain("vivoxClientPump");
     LLSD result;
 
     do
@@ -2030,7 +2038,7 @@ int LLVivoxVoiceClient::voicePlaybackBuffer()
             // Update UI, should really use a separate callback.
             notifyVoiceFontObservers();
 
-            result = llcoro::suspendUntilEventOnWithTimeout(voicePump, CAPTURE_BUFFER_MAX_TIME, timeoutResult);
+            result = llcoro::suspendUntilEventOnWithTimeout(mVivoxPump, CAPTURE_BUFFER_MAX_TIME, timeoutResult);
             LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
         } while (!result.has("recplay"));
 
@@ -2551,7 +2559,7 @@ void LLVivoxVoiceClient::tuningStart()
     mTuningMode = true;
     if (!mIsCoroutineActive)
     {
-        LLCoros::instance().launch("LLVivoxVoiceClient::voiceControlCoro();",
+        LLCoros::instance().launch("LLVivoxVoiceClient::voiceControlCoro",
             boost::bind(&LLVivoxVoiceClient::voiceControlCoro, LLVivoxVoiceClient::getInstance()));
     }
     else if (mIsInChannel)
@@ -3214,7 +3222,7 @@ void LLVivoxVoiceClient::connectorCreateResponse(int statusCode, std::string &st
         result["connector"] = LLSD::Boolean(false);
     }
 
-    LLEventPumps::instance().post("vivoxClientPump", result);
+    mVivoxPump.post(result);
 }
 
 void LLVivoxVoiceClient::loginResponse(int statusCode, std::string &statusString, std::string &accountHandle, int numberOfAliases)
@@ -3244,7 +3252,7 @@ void LLVivoxVoiceClient::loginResponse(int statusCode, std::string &statusString
         result["login"] = LLSD::String("response_ok");
 	}
 
-    LLEventPumps::instance().post("vivoxClientPump", result);
+    mVivoxPump.post(result);
 
 }
 
@@ -3270,7 +3278,7 @@ void LLVivoxVoiceClient::sessionCreateResponse(std::string &requestId, int statu
                         ("session", "failed")
                         ("reason", LLSD::Integer(statusCode)));
 
-                LLEventPumps::instance().post("vivoxClientPump", vivoxevent);
+                mVivoxPump.post(vivoxevent);
             }
 			else
 			{
@@ -3288,7 +3296,7 @@ void LLVivoxVoiceClient::sessionCreateResponse(std::string &requestId, int statu
         LLSD vivoxevent(LLSDMap("handle", LLSD::String(sessionHandle))
                 ("session", "created"));
 
-        LLEventPumps::instance().post("vivoxClientPump", vivoxevent);
+        mVivoxPump.post(vivoxevent);
 	}
 }
 
@@ -3313,7 +3321,7 @@ void LLVivoxVoiceClient::sessionGroupAddSessionResponse(std::string &requestId,
                 LLSD vivoxevent(LLSDMap("handle", LLSD::String(sessionHandle))
                     ("session", "failed"));
 
-                LLEventPumps::instance().post("vivoxClientPump", vivoxevent);
+                mVivoxPump.post(vivoxevent);
 			}
 			else
 			{
@@ -3332,7 +3340,7 @@ void LLVivoxVoiceClient::sessionGroupAddSessionResponse(std::string &requestId,
         LLSD vivoxevent(LLSDMap("handle", LLSD::String(sessionHandle))
             ("session", "added"));
 
-        LLEventPumps::instance().post("vivoxClientPump", vivoxevent);
+        mVivoxPump.post(vivoxevent);
 
 	}
 }
@@ -3375,7 +3383,7 @@ void LLVivoxVoiceClient::logoutResponse(int statusCode, std::string &statusStrin
 	}
     LLSD vivoxevent(LLSDMap("logout", LLSD::Boolean(true)));
 
-    LLEventPumps::instance().post("vivoxClientPump", vivoxevent);
+    mVivoxPump.post(vivoxevent);
 }
 
 void LLVivoxVoiceClient::connectorShutdownResponse(int statusCode, std::string &statusString)
@@ -3391,7 +3399,7 @@ void LLVivoxVoiceClient::connectorShutdownResponse(int statusCode, std::string &
 	
     LLSD vivoxevent(LLSDMap("connector", LLSD::Boolean(false)));
 
-    LLEventPumps::instance().post("vivoxClientPump", vivoxevent);
+    mVivoxPump.post(vivoxevent);
 }
 
 void LLVivoxVoiceClient::sessionAddedEvent(
@@ -3500,7 +3508,7 @@ void LLVivoxVoiceClient::joinedAudioSession(const sessionStatePtr_t &session)
         LLSD vivoxevent(LLSDMap("handle", LLSD::String(session->mHandle))
                 ("session", "joined"));
 
-        LLEventPumps::instance().post("vivoxClientPump", vivoxevent);
+        mVivoxPump.post(vivoxevent);
 
 		// Add the current user as a participant here.
         participantStatePtr_t participant(session->addParticipant(sipURIFromName(mAccountName)));
@@ -3644,7 +3652,7 @@ void LLVivoxVoiceClient::leftAudioSession(const sessionStatePtr_t &session)
         LLSD vivoxevent(LLSDMap("handle", LLSD::String(session->mHandle))
             ("session", "removed"));
 
-        LLEventPumps::instance().post("vivoxClientPump", vivoxevent);
+        mVivoxPump.post(vivoxevent);
     }
 }
 
@@ -3672,7 +3680,7 @@ void LLVivoxVoiceClient::accountLoginStateChangeEvent(
 		case 1:
             levent["login"] = LLSD::String("account_login");
 
-            LLEventPumps::instance().post("vivoxClientPump", levent);
+            mVivoxPump.post(levent);
             break;
         case 2:
             break;
@@ -3680,7 +3688,7 @@ void LLVivoxVoiceClient::accountLoginStateChangeEvent(
         case 3:
             levent["login"] = LLSD::String("account_loggingOut");
 
-            LLEventPumps::instance().post("vivoxClientPump", levent);
+            mVivoxPump.post(levent);
             break;
 
         case 4:
@@ -3693,7 +3701,7 @@ void LLVivoxVoiceClient::accountLoginStateChangeEvent(
         case 0:
             levent["login"] = LLSD::String("account_logout");
 
-            LLEventPumps::instance().post("vivoxClientPump", levent);
+            mVivoxPump.post(levent);
             break;
     		
         default:
@@ -3728,7 +3736,7 @@ void LLVivoxVoiceClient::mediaCompletionEvent(std::string &sessionGroupHandle, s
 	}
 
     if (!result.isUndefined())
-        LLEventPumps::instance().post("vivoxClientPump", result);
+        mVivoxPump.post(result);
 }
 
 void LLVivoxVoiceClient::mediaStreamUpdatedEvent(
@@ -5146,7 +5154,7 @@ void LLVivoxVoiceClient::setVoiceEnabled(bool enabled)
 
             if (!mIsCoroutineActive)
             {
-                LLCoros::instance().launch("LLVivoxVoiceClient::voiceControlCoro();",
+                LLCoros::instance().launch("LLVivoxVoiceClient::voiceControlCoro",
                     boost::bind(&LLVivoxVoiceClient::voiceControlCoro, LLVivoxVoiceClient::getInstance()));
             }
             else
@@ -6541,7 +6549,7 @@ void LLVivoxVoiceClient::accountGetSessionFontsResponse(int statusCode, const st
         // receiving the last one.
         LLSD result(LLSDMap("voice_fonts", LLSD::Boolean(true)));
 
-        LLEventPumps::instance().post("vivoxClientPump", result);
+        mVivoxPump.post(result);
     }
 	notifyVoiceFontObservers();
 	mVoiceFontsReceived = true;
@@ -6692,7 +6700,7 @@ void LLVivoxVoiceClient::enablePreviewBuffer(bool enable)
     else
         result["recplay"] = "quit";
 
-    LLEventPumps::instance().post("vivoxClientPump", result);
+    mVivoxPump.post(result);
 
 	if(mCaptureBufferMode && mIsInChannel)
 	{
@@ -6713,7 +6721,7 @@ void LLVivoxVoiceClient::recordPreviewBuffer()
 	mCaptureBufferRecording = true;
 
     LLSD result(LLSDMap("recplay", "record"));
-    LLEventPumps::instance().post("vivoxClientPump", result);
+    mVivoxPump.post(result);
 }
 
 void LLVivoxVoiceClient::playPreviewBuffer(const LLUUID& effect_id)
@@ -6736,7 +6744,7 @@ void LLVivoxVoiceClient::playPreviewBuffer(const LLUUID& effect_id)
 	mCaptureBufferPlaying = true;
 
     LLSD result(LLSDMap("recplay", "playback"));
-    LLEventPumps::instance().post("vivoxClientPump", result);
+    mVivoxPump.post(result);
 }
 
 void LLVivoxVoiceClient::stopPreviewBuffer()
@@ -6745,7 +6753,7 @@ void LLVivoxVoiceClient::stopPreviewBuffer()
 	mCaptureBufferPlaying = false;
 
     LLSD result(LLSDMap("recplay", "quit"));
-    LLEventPumps::instance().post("vivoxClientPump", result);
+    mVivoxPump.post(result);
 }
 
 bool LLVivoxVoiceClient::isPreviewRecording()
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index a6500d1399..98eb2d3cdc 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -2066,7 +2066,7 @@ void LLVOVolume::setNumTEs(const U8 num_tes)
 	}
 	else if(old_num_tes > num_tes && mMediaImplList.size() > num_tes) //old faces removed
 	{
-		U8 end = mMediaImplList.size() ;
+		U8 end = (U8)(mMediaImplList.size()) ;
 		for(U8 i = num_tes; i < end ; i++)
 		{
 			removeMediaImpl(i) ;				
diff --git a/indra/newview/llwatchdog.cpp b/indra/newview/llwatchdog.cpp
index dd6c77ca7d..6273f10c69 100644
--- a/indra/newview/llwatchdog.cpp
+++ b/indra/newview/llwatchdog.cpp
@@ -91,7 +91,11 @@ void LLWatchdogEntry::start()
 
 void LLWatchdogEntry::stop()
 {
-	LLWatchdog::getInstance()->remove(this);
+    // this can happen very late in the shutdown sequence
+    if (! LLWatchdog::wasDeleted())
+    {
+        LLWatchdog::getInstance()->remove(this);
+    }
 }
 
 // LLWatchdogTimeout
diff --git a/indra/newview/llweb.cpp b/indra/newview/llweb.cpp
index a34c5826ed..63257d6543 100644
--- a/indra/newview/llweb.cpp
+++ b/indra/newview/llweb.cpp
@@ -157,12 +157,12 @@ std::string LLWeb::expandURLSubstitutions(const std::string &url,
 										  const LLSD &default_subs)
 {
 	LLSD substitution = default_subs;
-	substitution["VERSION"] = LLVersionInfo::getVersion();
-	substitution["VERSION_MAJOR"] = LLVersionInfo::getMajor();
-	substitution["VERSION_MINOR"] = LLVersionInfo::getMinor();
-	substitution["VERSION_PATCH"] = LLVersionInfo::getPatch();
-	substitution["VERSION_BUILD"] = LLVersionInfo::getBuild();
-	substitution["CHANNEL"] = LLVersionInfo::getChannel();
+	substitution["VERSION"] = LLVersionInfo::instance().getVersion();
+	substitution["VERSION_MAJOR"] = LLVersionInfo::instance().getMajor();
+	substitution["VERSION_MINOR"] = LLVersionInfo::instance().getMinor();
+	substitution["VERSION_PATCH"] = LLVersionInfo::instance().getPatch();
+	substitution["VERSION_BUILD"] = LLVersionInfo::instance().getBuild();
+	substitution["CHANNEL"] = LLVersionInfo::instance().getChannel();
 	substitution["GRID"] = LLGridManager::getInstance()->getGridId();
 	substitution["GRID_LOWERCASE"] = utf8str_tolower(LLGridManager::getInstance()->getGridId());
 	substitution["OS"] = LLOSInfo::instance().getOSStringSimple();
diff --git a/indra/newview/llwindebug.h b/indra/newview/llwindebug.h
index 7e5818ba1c..524adba652 100644
--- a/indra/newview/llwindebug.h
+++ b/indra/newview/llwindebug.h
@@ -29,7 +29,11 @@
 
 #include "stdtypes.h"
 #include "llwin32headerslean.h"
+
+#pragma warning (push)
+#pragma warning (disable:4091) // a microsoft header has warnings. Very nice.
 #include <dbghelp.h>
+#pragma warning (pop)
 
 class LLWinDebug:
 	public LLSingleton<LLWinDebug>
diff --git a/indra/newview/llxmlrpclistener.cpp b/indra/newview/llxmlrpclistener.cpp
index 0daf3e761d..bae615232e 100644
--- a/indra/newview/llxmlrpclistener.cpp
+++ b/indra/newview/llxmlrpclistener.cpp
@@ -43,6 +43,7 @@
 
 // other Linden headers
 #include "llerror.h"
+#include "lleventcoro.h"
 #include "stringize.h"
 #include "llxmlrpctransaction.h"
 #include "llsecapi.h"
@@ -366,6 +367,8 @@ public:
 
         // whether successful or not, send reply on requested LLEventPump
         replyPump.post(data);
+        // need to wake up the loginCoro now
+        llcoro::suspend();
 
         // Because mTransaction is a boost::scoped_ptr, deleting this object
         // frees our LLXMLRPCTransaction object.
diff --git a/indra/newview/skins/default/xui/en/notifications.xml b/indra/newview/skins/default/xui/en/notifications.xml
index 32ae56e3af..7e405cf0d0 100644
--- a/indra/newview/skins/default/xui/en/notifications.xml
+++ b/indra/newview/skins/default/xui/en/notifications.xml
@@ -4016,6 +4016,8 @@ Finished download of raw terrain file to:
 [DOWNLOAD_PATH].
   </notification>
 
+  <!-- RequiredUpdate does not display release notes URL because we don't get
+       that from login.cgi's login failure message. -->
   <notification
    icon="alertmodal.tga"
    name="RequiredUpdate"
@@ -4033,6 +4035,7 @@ Please download from https://secondlife.com/support/downloads/
    name="PauseForUpdate"
    type="alertmodal">
 Version [VERSION] is required for login.
+Release notes: [URL]
 Click OK to download and install.
     <tag>confirm</tag>
     <usetemplate
@@ -4045,6 +4048,7 @@ Click OK to download and install.
    name="OptionalUpdateReady"
    type="alertmodal">
 Version [VERSION] has been downloaded and is ready to install.
+Release notes: [URL]
 Click OK to install.
     <tag>confirm</tag>
     <usetemplate
@@ -4057,6 +4061,7 @@ Click OK to install.
    name="PromptOptionalUpdate"
    type="alertmodal">
 Version [VERSION] has been downloaded and is ready to install.
+Release notes: [URL]
 Proceed?
     <tag>confirm</tag>
     <usetemplate
diff --git a/indra/newview/tests/lllogininstance_test.cpp b/indra/newview/tests/lllogininstance_test.cpp
index 2edad30493..57f2d31eab 100644
--- a/indra/newview/tests/lllogininstance_test.cpp
+++ b/indra/newview/tests/lllogininstance_test.cpp
@@ -202,8 +202,6 @@ void LLUIColorTable::saveUserSettings(void)const {}
 
 //-----------------------------------------------------------------------------
 #include "../llversioninfo.h"
-const std::string &LLVersionInfo::getVersion() { return VIEWERLOGIN_VERSION; }
-const std::string &LLVersionInfo::getChannel() { return VIEWERLOGIN_CHANNEL; }
 
 bool llHashedUniqueID(unsigned char* id) 
 {
diff --git a/indra/newview/tests/llversioninfo_test.cpp b/indra/newview/tests/llversioninfo_test.cpp
index 58f0469552..51a6f8f113 100644
--- a/indra/newview/tests/llversioninfo_test.cpp
+++ b/indra/newview/tests/llversioninfo_test.cpp
@@ -83,39 +83,39 @@ namespace tut
 	void versioninfo_object_t::test<1>()
 	{   
 		std::cout << "What we parsed from CMake: " << LL_VIEWER_VERSION_BUILD << std::endl;
-		std::cout << "What we get from llversioninfo: " << LLVersionInfo::getBuild() << std::endl;
+		std::cout << "What we get from llversioninfo: " << LLVersionInfo::instance().getBuild() << std::endl;
 		ensure_equals("Major version", 
-					  LLVersionInfo::getMajor(), 
+					  LLVersionInfo::instance().getMajor(), 
 					  LL_VIEWER_VERSION_MAJOR);
 		ensure_equals("Minor version", 
-					  LLVersionInfo::getMinor(), 
+					  LLVersionInfo::instance().getMinor(), 
 					  LL_VIEWER_VERSION_MINOR);
 		ensure_equals("Patch version", 
-					  LLVersionInfo::getPatch(), 
+					  LLVersionInfo::instance().getPatch(), 
 					  LL_VIEWER_VERSION_PATCH);
 		ensure_equals("Build version", 
-					  LLVersionInfo::getBuild(), 
+					  LLVersionInfo::instance().getBuild(), 
 					  LL_VIEWER_VERSION_BUILD);
 		ensure_equals("Channel version", 
-					  LLVersionInfo::getChannel(), 
+					  LLVersionInfo::instance().getChannel(), 
 					  ll_viewer_channel);
 		ensure_equals("Version String", 
-					  LLVersionInfo::getVersion(), 
+					  LLVersionInfo::instance().getVersion(), 
 					  mVersion);
 		ensure_equals("Short Version String", 
-					  LLVersionInfo::getShortVersion(), 
+					  LLVersionInfo::instance().getShortVersion(), 
 					  mShortVersion);
 		ensure_equals("Version and channel String", 
-					  LLVersionInfo::getChannelAndVersion(), 
+					  LLVersionInfo::instance().getChannelAndVersion(), 
 					  mVersionAndChannel);
 
-		LLVersionInfo::resetChannel(mResetChannel);
+		LLVersionInfo::instance().resetChannel(mResetChannel);
 		ensure_equals("Reset channel version", 
-					  LLVersionInfo::getChannel(), 
+					  LLVersionInfo::instance().getChannel(), 
 					  mResetChannel);
 
 		ensure_equals("Reset Version and channel String", 
-					  LLVersionInfo::getChannelAndVersion(), 
+					  LLVersionInfo::instance().getChannelAndVersion(), 
 					  mResetVersionAndChannel);
 	}
 }
diff --git a/indra/newview/viewer_manifest.py b/indra/newview/viewer_manifest.py
index b385717dbe..f5edde1923 100755
--- a/indra/newview/viewer_manifest.py
+++ b/indra/newview/viewer_manifest.py
@@ -528,12 +528,8 @@ class WindowsManifest(ViewerManifest):
 
             # These need to be installed as a SxS assembly, currently a 'private' assembly.
             # See http://msdn.microsoft.com/en-us/library/ms235291(VS.80).aspx
-            if self.args['configuration'].lower() == 'debug':
-                self.path("msvcr120d.dll")
-                self.path("msvcp120d.dll")
-            else:
-                self.path("msvcr120.dll")
-                self.path("msvcp120.dll")
+            self.path("msvcp140.dll")
+            self.path("vcruntime140.dll")
 
             # SLVoice executable
             with self.prefix(src=os.path.join(pkgdir, 'bin', 'release')):
@@ -605,8 +601,8 @@ class WindowsManifest(ViewerManifest):
             # MSVC DLLs needed for CEF and have to be in same directory as plugin
             with self.prefix(src=os.path.join(self.args['build'], os.pardir,
                                               'sharedlibs', 'Release')):
-                self.path("msvcp120.dll")
-                self.path("msvcr120.dll")
+                self.path("msvcp140.dll")
+                self.path("vcruntime140.dll")
 
             # CEF files common to all configurations
             with self.prefix(src=os.path.join(pkgdir, 'resources')):
@@ -956,7 +952,7 @@ class DarwinManifest(ViewerManifest):
 
                 with self.prefix(src=relpkgdir, dst=""):
                     self.path("libndofdev.dylib")
-                    self.path("libhunspell-1.3.a")   
+                    self.path("libhunspell-*.dylib")   
 
                 with self.prefix(src_dst="cursors_mac"):
                     self.path("*.tif")
@@ -1215,11 +1211,6 @@ class DarwinManifest(ViewerManifest):
             devfile = re.search("/dev/disk([0-9]+)[^s]", hdi_output).group(0).strip()
             volpath = re.search('HFS\s+(.+)', hdi_output).group(1).strip()
 
-            if devfile != '/dev/disk1':
-                # adding more debugging info based upon nat's hunches to the
-                # logs to help track down 'SetFile -a V' failures -brad
-                print "WARNING: 'SetFile -a V' command below is probably gonna fail"
-
             # Copy everything in to the mounted .dmg
 
             app_name = self.app_name()
@@ -1247,21 +1238,6 @@ class DarwinManifest(ViewerManifest):
             # Hide the background image, DS_Store file, and volume icon file (set their "visible" bit)
             for f in ".VolumeIcon.icns", "background.jpg", ".DS_Store":
                 pathname = os.path.join(volpath, f)
-                # We've observed mysterious "no such file" failures of the SetFile
-                # command, especially on the first file listed above -- yet
-                # subsequent inspection of the target directory confirms it's
-                # there. Timing problem with copy command? Try to handle.
-                for x in xrange(3):
-                    if os.path.exists(pathname):
-                        print "Confirmed existence: %r" % pathname
-                        break
-                    print "Waiting for %s copy command to complete (%s)..." % (f, x+1)
-                    sys.stdout.flush()
-                    time.sleep(1)
-                # If we fall out of the loop above without a successful break, oh
-                # well, possibly we've mistaken the nature of the problem. In any
-                # case, don't hang up the whole build looping indefinitely, let
-                # the original problem manifest by executing the desired command.
                 self.run_command(['SetFile', '-a', 'V', pathname])
 
             # Create the alias file (which is a resource file) from the .r
@@ -1564,6 +1540,11 @@ class Linux_x86_64_Manifest(LinuxManifest):
 ################################################################
 
 if __name__ == "__main__":
+    # Report our own command line so that, in case of trouble, a developer can
+    # manually rerun the same command.
+    print('%s \\\n%s' %
+          (sys.executable,
+           ' '.join((("'%s'" % arg) if ' ' in arg else arg) for arg in sys.argv)))
     extra_arguments = [
         dict(name='bugsplat', description="""BugSplat database to which to post crashes,
              if BugSplat crash reporting is desired""", default=''),