merge changes for DRTVWR-336

autobuild.xml

doc/contributions.txt

indra/cmake/BuildVersion.cmake

indra/llmath/v4color.h

indra/llmessage/llinstantmessage.h

indra/llui/CMakeLists.txt

indra/llui/llbutton.cpp

indra/llui/llfloater.cpp

indra/llui/llfloater.h

indra/llui/llnotifications.cpp

indra/llui/llnotifications.h

indra/llui/llnotificationslistener.cpp

indra/llui/llnotificationslistener.h

indra/llui/lltabcontainer.cpp

indra/llui/lluictrl.cpp

indra/llui/llview.cpp

indra/llui/llviewereventrecorder.cpp

indra/llui/llviewereventrecorder.h

indra/llwindow/llwindowmacosx.cpp

indra/llxml/llcontrol.cpp