SL-16627 AutoFPS first pass

indra/newview/app_settings/settings.xml

indra/newview/llagent.cpp

indra/newview/llfloaterperformance.cpp

indra/newview/llfloaterperformance.h

indra/newview/llfloaterpreference.cpp

indra/newview/llfloaterpreference.h

indra/newview/llfloaterpreferencesgraphicsadvanced.cpp

indra/newview/llfloaterpreferencesgraphicsadvanced.h

indra/newview/llviewerdisplay.cpp

indra/newview/llworld.cpp

indra/newview/llworld.h

indra/newview/pipeline.cpp

indra/newview/pipeline.h

.../default/xui/en/floater_preferences_graphics_advanced.xml

indra/newview/skins/default/xui/en/notifications.xml

...ew/skins/default/xui/en/panel_performance_preferences.xml

...view/skins/default/xui/en/panel_preferences_graphics1.xml