am 477def1d: Merge changes I11495d03,If5816721 into gingerbread

Merge commit '477def1d4216f82bdfe58525131db88b384fc5a5' into gingerbread-plus-aosp

* commit '477def1d4216f82bdfe58525131db88b384fc5a5':
  Add a new UEventObserver subclass to broadcast an Intent whe USB state changes.
  DO NOT MERGE Add new permission to allow access to USB devices