merge from viewer-trunk

doc/contributions.txt

indra/cmake/Variables.cmake

indra/integration_tests/llui_libtest/llwidgetreg.cpp

indra/llaudio/llstreamingaudio_fmod.cpp

indra/llcommon/CMakeLists.txt

indra/llcommon/llcommonutils.cpp

indra/llcommon/llcommonutils.h

indra/llplugin/slplugin/CMakeLists.txt

indra/llplugin/slplugin/slplugin.cpp

indra/llui/CMakeLists.txt

indra/llui/llaccordionctrl.cpp

indra/llui/llaccordionctrl.h

indra/llui/llaccordionctrltab.cpp

indra/llui/llbutton.cpp

indra/llui/llbutton.h

indra/llui/llflatlistview.cpp

indra/llui/llflatlistview.h

indra/llui/llfloater.h

indra/llui/lliconctrl.h

indra/llui/lllineeditor.cpp