am d9e88d22: Merge "Add "none" for vold and deprecate mkobb -c" into gingerbread

Merge commit 'd9e88d22f0ffefdc6a3b9c59168bd1bb6d402486' into gingerbread-plus-aosp

* commit 'd9e88d22f0ffefdc6a3b9c59168bd1bb6d402486':
  Add "none" for vold and deprecate mkobb -c