emplace_back() all the things

indra/llcharacter/llmultigesture.cpp

indra/llcommon/llregistry.h

indra/llmath/llvolume.cpp

indra/llrender/llrender2dutils.cpp

indra/llrender/llshadermgr.cpp

indra/llui/llloadingindicator.cpp

indra/llui/llscrolllistctrl.cpp

indra/llui/llxuiparser.cpp

indra/llvfs/lldir.cpp

indra/newview/llfloatermodelpreview.cpp

indra/newview/llfloaterpreference.cpp

indra/newview/llglsandbox.cpp

indra/newview/llhudmanager.cpp

indra/newview/llhudnametag.cpp

indra/newview/llhudobject.cpp

indra/newview/llhudtext.cpp

indra/newview/llmeshrepository.cpp

indra/newview/llpanelgroupbulk.cpp

indra/newview/llpanelgroupinvite.cpp

indra/newview/llpanelobjectinventory.cpp