Merge branch 'master' into DRTVWR-544-maint

autobuild.xml

doc/contributions.txt

indra/CMakeLists.txt

indra/cmake/00-Common.cmake

indra/cmake/APR.cmake

indra/cmake/BerkeleyDB.cmake

indra/cmake/Boost.cmake

indra/cmake/CMakeLists.txt

indra/cmake/FindBerkeleyDB.cmake

indra/cmake/FindZLIBNG.cmake

indra/cmake/LLAppearanceUtility.cmake

indra/cmake/LLCommon.cmake

indra/cmake/LLPrimitive.cmake

indra/cmake/ZLIBNG.cmake

indra/doxygen/CMakeLists.txt

indra/lib/python/indra/util/llmanifest.py

indra/llappearance/lltexlayer.cpp

indra/llappearance/lltexlayer.h

indra/llcommon/CMakeLists.txt

indra/llcommon/classic_callback.cpp