merge changes for 3.4.5

.hgtags

autobuild.xml

doc/contributions.txt

indra/CMakeLists.txt

indra/cmake/LLAddBuildTest.cmake

indra/cmake/LLCommon.cmake

indra/cmake/NVAPI.cmake

indra/linux_updater/CMakeLists.txt

indra/linux_updater/linux_updater.cpp

indra/llcharacter/llbvhconsts.h

indra/llcharacter/llmotioncontroller.cpp

indra/llcharacter/llmotioncontroller.h

indra/llcharacter/llvisualparam.h

indra/llcommon/CMakeLists.txt

indra/llcommon/llallocator.cpp

indra/llcommon/llallocator.h

indra/llcommon/llfasttimer.cpp

indra/llcommon/llfasttimer.h

indra/llcommon/llfasttimer_class.h

indra/llcommon/llinitparam.h