QAR-650 - Viewer RC 9 merge -> release (post cmake)

doc/contributions.txt

indra/cmake/APR.cmake

indra/lib/python/indra/base/llsd.py

indra/llcommon/llerror.cpp

indra/llcommon/llmemory.cpp

indra/llcommon/llversionviewer.h

indra/llmath/llvolume.cpp

indra/llrender/CMakeLists.txt

indra/llrender/llfontgl.cpp

indra/llrender/llimagegl.cpp

indra/llrender/llimagegl.h

indra/llrender/llrender.cpp

indra/llrender/llrender.h

indra/llrender/llrendertarget.cpp

indra/llrender/llvertexbuffer.cpp

indra/llui/llbutton.cpp

indra/llui/llcombobox.cpp

indra/llui/llmenugl.cpp

indra/llui/llscrollbar.cpp

indra/llui/llscrollcontainer.cpp