Merge branch 'release/gltf-maint2' of https://github.com/secondlife/viewer

indra/llcommon/llcoros.cpp

indra/llcommon/llerror.cpp

indra/llcommon/llerror.h

indra/llcommon/llexception.cpp

indra/llcorehttp/_httpservice.cpp

indra/llimage/llimagebmp.cpp

indra/llimage/llimagedxt.cpp

indra/llimage/llimagetga.cpp

indra/llrender/llimagegl.cpp

indra/llrender/llrender.cpp

indra/llrender/llrender.h

indra/llui/llnotifications.cpp

indra/llui/lltexteditor.cpp

indra/llui/lltransutil.cpp

indra/newview/llappcorehttp.cpp

indra/newview/llappviewer.cpp

indra/newview/llappviewer.h

indra/newview/llavatarrenderinfoaccountant.cpp

indra/newview/llviewermenu.cpp

indra/newview/llviewerwindow.cpp