Bug 906281 part.1 Make nsEventStateManager::mClickHoldContextMenu static variable r=smaug
Bug 906281 part.2 Get rid of "nglayout.events.dispatchLeftClickOnly" due to not used r=smaug
Bug 906281 part.3 Create nsEventStateManager::Prefs for capsuling the preferences management r=smaug
Bug 906281 part.4 Use Preferences::AddIntVarCache() for accesskey prefs in nsEventStateManager::Prefs r=smaug