merge -r 1879-1884 https://svn.aws.productengine.com/secondlife/pe/stable-2

indra/newview/llchannelmanager.cpp

indra/newview/lllandmarkactions.cpp

indra/newview/lllandmarkactions.h

indra/newview/llnotificationalerthandler.cpp

indra/newview/lloutputmonitorctrl.cpp

indra/newview/lloutputmonitorctrl.h

indra/newview/llpanelteleporthistory.cpp

indra/newview/llpanelteleporthistory.h

indra/newview/llscreenchannel.cpp

indra/newview/llsyswellwindow.cpp

indra/newview/lltoast.cpp

indra/newview/lltoast.h

...wview/skins/default/xui/en/menu_teleport_history_item.xml

...ewview/skins/default/xui/en/menu_teleport_history_tab.xml