MAINT-1534 Fix for calls to find widgets getting out of hand.

indra/llui/lltoolbar.cpp

indra/llui/lltoolbar.h

indra/newview/llchathistory.cpp

indra/newview/llmoveview.cpp

indra/newview/llmoveview.h

indra/newview/llpanelpathfindingrebakenavmesh.cpp

indra/newview/llpanelpathfindingrebakenavmesh.h

indra/newview/llsidepaneltaskinfo.cpp

indra/newview/llsidepaneltaskinfo.h

indra/newview/lltoolbarview.cpp

indra/newview/lltoolbarview.h

indra/newview/llviewerwindow.cpp