merge changes for 3.7.30-release

.hgtags

doc/contributions.txt

indra/cmake/Copy3rdPartyLibs.cmake

indra/llappearance/llwearable.cpp

indra/llappearance/llwearabledata.cpp

indra/llappearance/llwearabledata.h

indra/llappearance/llwearabletype.cpp

indra/llappearance/llwearabletype.h

indra/llcharacter/lljoint.cpp

indra/llcharacter/lljointstate.h

indra/llcommon/llerror.cpp

indra/llcommon/llfile.cpp

indra/llcommon/llfile.h

indra/llcommon/llliveappconfig.cpp

indra/llcommon/lllivefile.cpp

indra/llcommon/llmd5.cpp

indra/llcommon/llmemory.cpp

indra/llcommon/llmemory.h

indra/llcommon/llstacktrace.cpp

indra/llcommon/llstacktrace.h