Merge down from Branch_1-18-1:

etc/message.xml

indra/llcharacter/llmotion.cpp

indra/llcharacter/llmotion.h

indra/llcharacter/llmotioncontroller.cpp

indra/llcharacter/llmotioncontroller.h

indra/llcharacter/llpose.cpp

indra/llcharacter/llpose.h

indra/llcommon/lltimer.cpp

indra/llcommon/lltimer.h

indra/llmath/llrect.h

indra/llui/llbutton.cpp

indra/llui/llbutton.h

indra/llui/llctrlselectioninterface.h

indra/llui/llfloater.cpp

indra/llui/llfloater.h

indra/llui/llfocusmgr.cpp

indra/llui/llfocusmgr.h

indra/llui/llmenugl.cpp

indra/llui/llpanel.cpp

indra/llui/llpanel.h