merge from viewer-development.

doc/contributions.txt

indra/llrender/llgl.cpp

indra/llrender/llgl.h

indra/llrender/llglheaders.h

indra/newview/lldrawable.cpp

indra/newview/lldrawpool.cpp

indra/newview/lldrawpool.h

indra/newview/lldrawpoolground.cpp

indra/newview/lldrawpoolsky.cpp

indra/newview/lldrawpoolwater.cpp

indra/newview/lldrawpoolwlsky.cpp

indra/newview/llfloatergodtools.cpp

indra/newview/llfloaterworldmap.cpp

indra/newview/llspatialpartition.cpp

indra/newview/llspatialpartition.h

indra/newview/llsurface.cpp

indra/newview/llviewerdisplay.cpp

indra/newview/llviewerobject.cpp

indra/newview/llviewerobject.h

indra/newview/llviewerregion.cpp