am 52075987: am 31b5d548: Merge "Fix a bug where we cleaned an apps external data when upgrading it. :(" into gingerbread

Merge commit '52075987c5726c95613f98571aac4c54e8319df4'

* commit '52075987c5726c95613f98571aac4c54e8319df4':
  Fix a bug where we cleaned an apps external data when upgrading it. :(