DRTVWR-139: merge back 3.3.1-beta2 fixes

.hgignore

.hgtags

BuildParams

autobuild.xml

build.sh

doc/contributions.txt

indra/cmake/VisualLeakDetector.cmake

indra/cmake/WebKitLibPlugin.cmake

indra/edit-me-to-trigger-new-build.txt

indra/llcharacter/llcharacter.h

indra/llcommon/llversionviewer.h

indra/llimage/llimagepng.cpp

indra/llmath/llcoord.h

indra/llrender/llgl.cpp

indra/llrender/llgl.h

indra/llrender/llglheaders.h

indra/llrender/llglslshader.cpp

indra/llrender/llshadermgr.cpp

indra/llrender/llshadermgr.h

indra/llrender/llvertexbuffer.cpp