Merge branch 'DRTVWR-559' into DRTVWR-583

doc/contributions.txt

indra/llcharacter/llkeyframemotion.cpp

indra/llcommon/CMakeLists.txt

indra/llcommon/llapp.cpp

indra/llcommon/llapp.h

indra/llcommon/llerror.h

indra/llcommon/llerrorthread.cpp

indra/llcommon/llerrorthread.h

indra/llinventory/llsettingssky.cpp

indra/llmath/llvolume.cpp

indra/llmath/llvolume.h

indra/llmath/llvolumemgr.cpp

indra/llmessage/llcachename.cpp

indra/llprimitive/llmaterial.cpp

indra/llprimitive/llmaterial.h

indra/llrender/llfontgl.cpp

indra/llrender/llfontgl.h

indra/llrender/llimagegl.cpp

indra/llrender/llshadermgr.cpp

indra/llrender/llshadermgr.h