SL-15742: Convert build scripts to Python 3

This changeset makes it possible to build the Second Life viewer using
Python 3. It is designed to be used with an equivalent Autobuild branch
so that a developer can compile without needing Python 2 on their
machine.

Breaking change: Python 2 support ending

Rather than supporting two versions of Python, including one that was
discontinued at the beginning of the year, this branch focuses on
pouring future effort into Python 3 only. As a result, scripts do not
need to be backwards compatible. This means that build environments,
be they on personal computers and on build agents, need to have a
compatible interpreter.

Notes

- SLVersionChecker will still use Python 2 on macOS
- Fixed the message template url used by template_verifier.py

1 files changed, 2 insertions, 2 deletions

diff --git a/indra/fix-incredibuild.py b/indra/fix-incredibuild.py
index 98f16e9d97..678ee4329e 100755
--- a/indra/fix-incredibuild.py
+++ b/indra/fix-incredibuild.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 ## 
 ## $LicenseInfo:firstyear=2011&license=viewerlgpl$
 ## Second Life Viewer Source Code
@@ -27,7 +27,7 @@ import glob
 
 def delete_file_types(path, filetypes):
     if os.path.exists(path):
-        print 'Cleaning: ' + path
+        print('Cleaning: ' + path)
         orig_dir = os.getcwd();
         os.chdir(path)
         filelist = []