Bug 989212 Rename nsEventStates to mozilla::EventStates r=smaug

--HG--
rename : dom/events/nsEventStates.h => dom/events/EventStates.h
Bug 989214 Rename nsPaintRequest to mozilla::dom::PaintRequest r=smaug

--HG--
rename : dom/events/nsPaintRequest.cpp => dom/events/PaintRequest.cpp
rename : dom/events/nsPaintRequest.h => dom/events/PaintRequest.h
Bug 990855 part.1 Export TextComposition.h as mozilla/TextComposition.h r=smaug
Bug 990855 part.2 Remove dom/events from local includes of moz.build files r=smaug