Merge

indra/cmake/Copy3rdPartyLibs.cmake

indra/cmake/Variables.cmake

indra/llcommon/CMakeLists.txt

indra/llcommon/imageids.cpp

indra/llcommon/imageids.h

indra/llcommon/indra_constants.cpp

indra/llcommon/indra_constants.h

indra/llcommon/linden_common.h

indra/llcommon/lldictionary.cpp

indra/llcommon/lldictionary.h

indra/llcommon/llpreprocessor.h

indra/llcommon/llsingleton.h

indra/llcommon/llsys.cpp

indra/llmath/CMakeLists.txt

indra/llmessage/CMakeLists.txt

indra/llmessage/lldatapacker.cpp

indra/llmessage/lldatapacker.h

indra/llmessage/machine.cpp

indra/llmessage/machine.h

indra/llmessage/sound_ids.cpp