merge from trunk.

.hgignore

indra/llrender/llrendertarget.cpp

indra/llrender/llrendertarget.h

indra/llui/llbutton.cpp

indra/llui/llbutton.h

indra/llui/llconsole.cpp

indra/llui/llflatlistview.h

indra/llui/llfloater.cpp

indra/llui/llfloater.h

indra/llui/llfocusmgr.cpp

indra/llui/llfocusmgr.h

indra/llui/lllineeditor.cpp

indra/llui/lllineeditor.h

indra/llui/llmenugl.cpp

indra/llui/llmultislider.cpp

indra/llui/llmultislider.h

indra/llui/llmultisliderctrl.cpp

indra/llui/llpanel.cpp

indra/llui/llpanel.h

indra/llui/llslider.cpp