am 4e792fa5: Merge "Polish animations for fingerprint icon" into mnc-dev

* commit '4e792fa5a9b8de20503011dcffce92f96435d53c':
  Polish animations for fingerprint icon
  MediaPlayer: add mPreparing to weed out unwanted prepared messages
  BatteryStatsService: Only query bluetooth on demand.
  Indicate failed scans with EXTRA_RESULTS_UPDATED
  BatteryStatsService: Only query bluetooth on demand.
  Indicate failed scans with EXTRA_RESULTS_UPDATED
  For getHomeActivity() only return current user.
  Fix application moves.
  Close race condition in binderDied()
  Write packages.list when adding/removing users.
  camera: Add AIDL interface for CameraServiceProxy.
  Fix NPE in setSurfaceTexure
  Deal more gracefully with null smallIcons.
  Don't crash in bugreport on devices without BT
  Push initial disk state, handle empty media.