am cd90b277: am 17d176d8: am ddf157ca: Merge change I5ae73af7 into eclair

Merge commit 'cd90b2773e81b337436e71717cb6c8b5704af5c8'

* commit 'cd90b2773e81b337436e71717cb6c8b5704af5c8':
  Don't back up system wallpapers.