Ungodly super spammy mutex locks in input and hover

indra/llui/llbutton.cpp

indra/llui/lldraghandle.cpp

indra/llui/lllineeditor.cpp

indra/llui/llmodaldialog.cpp

indra/llui/llmultislider.cpp

indra/llui/llscrollbar.cpp

indra/llui/llslider.cpp

indra/llui/lltexteditor.cpp

indra/llui/lluictrl.cpp

indra/newview/llmanip.cpp

indra/newview/llmaniprotate.cpp

indra/newview/llmanipscale.cpp

indra/newview/llmaniptranslate.cpp

indra/newview/lltool.cpp

indra/newview/lltoolbrush.cpp

indra/newview/lltooldraganddrop.cpp

indra/newview/lltoolfocus.cpp

indra/newview/lltoolgrab.cpp

indra/newview/lltoolgun.cpp

indra/newview/lltoolpie.cpp