am 7877388b: (-s ours) am f4cd1c6b: DO NOT MERGE Mount secondary external storage writable by AID_MEDIA_RW rather than AID_SDCARD_RW

* commit '7877388b6c65c4819e436141ccc519161b719bec':
  DO NOT MERGE Mount secondary external storage writable by AID_MEDIA_RW rather than AID_SDCARD_RW