Merge from http://hg.secondlife.com/viewer-identity (display names)

BuildParams

build.sh

etc/message.xml

indra/cmake/run_build_test.py

indra/lib/python/indra/__init__.py

indra/llcommon/CMakeLists.txt

indra/llcommon/llavatarname.cpp

indra/llcommon/llavatarname.h

indra/llcommon/llchat.h

indra/llcommon/llstring.cpp

indra/llinventory/lltransactionflags.cpp

indra/llmessage/CMakeLists.txt

indra/llmessage/llavatarnamecache.cpp

indra/llmessage/llavatarnamecache.h

indra/llmessage/llcachename.cpp

indra/llmessage/llcachename.h

indra/llmessage/mean_collision_data.h

indra/llmessage/tests/llavatarnamecache_test.cpp

indra/llui/llcombobox.cpp

indra/llui/llcombobox.h