am c68bcc32: Merge "Only allow one movePackage operation in-flight" into gingerbread

Merge commit 'c68bcc320522abf856211e9aa00bba71ccaddacb' into gingerbread-plus-aosp

* commit 'c68bcc320522abf856211e9aa00bba71ccaddacb':
  Only allow one movePackage operation in-flight