Merge 3.6.8

.hgtags

indra/llappearance/lltexlayer.cpp

indra/llrender/llcubemap.cpp

indra/llrender/llimagegl.cpp

indra/llrender/llimagegl.h

indra/llrender/llrendertarget.cpp

indra/llrender/llvertexbuffer.cpp

indra/llrender/llvertexbuffer.h

indra/llwindow/llwindowmacosx-objc.h

indra/llwindow/llwindowmacosx-objc.mm

indra/newview/VIEWER_VERSION.txt

indra/newview/llappdelegate-objc.mm

indra/newview/llappviewermacosx.cpp

indra/newview/llavatarrenderinfoaccountant.cpp

indra/newview/lldrawpoolavatar.cpp

indra/newview/llspatialpartition.cpp

indra/newview/llvoavatar.cpp

indra/newview/llvoavatarself.cpp

indra/newview/pipeline.cpp