DEV-43463: Keep LLEventPump's LLStandardSignal alive during post()

Replace LLEventPump's boost::scoped_ptr<LLStandardSignal> with
boost::shared_ptr. Take a local stack copy of that shared_ptr in post()
methods, and invoke the signal through that copy. This guards against scenario
in which LLEventPump gets destroyed during signal invocation. (See Jira for
details.) Re-enable Mani's test case that used to crash.
Introduce ll_template_cast<> to allow a template function to recognize a
parameter of a particular type.
Introduce LLListenerWrapper mechanism to support wrapper objects for
LLEventPump listeners. You instantiate an LLListenerWrapper subclass object
inline in the listen() call (typically with llwrap<>), passing it the real
listener, trusting it to forward the eventual call.
Introduce prototypical LLCoutListener and LLLogListener subclasses for
illustrative and diagnostic purposes. Test that LLLogListener doesn't block
recognizing LLEventTrackable base class bound into wrapped listener.

1 files changed, 0 insertions, 2 deletions

diff --git a/indra/viewer_components/login/tests/lllogin_test.cpp b/indra/viewer_components/login/tests/lllogin_test.cpp
index 99ea796ad0..56c21016bd 100644
--- a/indra/viewer_components/login/tests/lllogin_test.cpp
+++ b/indra/viewer_components/login/tests/lllogin_test.cpp
@@ -416,7 +416,6 @@ namespace tut
 		ensure_equals("Failed to offline", listener.lastEvent()["state"].asString(), "offline");
 	}
 
-/*
     template<> template<>
     void llviewerlogin_object::test<5>()
     {
@@ -452,5 +451,4 @@ namespace tut
 
 		ensure_equals("SRV Failure", listener.lastEvent()["change"].asString(), "fail.login"); 
 	}
-*/
 }