Profiles: add PROFILES_STATE_CHANGED_ACTION broadcast intent

Added a new broadcast intent to profiles manager (PROFILES_STATE_CHANGED_ACTION), for
notify an event when profiles are enabled or disabled.

Change-Id: If701b3be54157c23acdf74e1da658fbce335437e
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>

Conflicts:

	core/java/android/app/ProfileManager.java