am eac4222f: am 949ffa3d: am 11cff8cd: Merge change Ie211adae into eclair

Merge commit 'eac4222f7f30bf1df14b223cf62e594914dd32d4'

* commit 'eac4222f7f30bf1df14b223cf62e594914dd32d4':
  Add a way for wallpapers to know the delta between virtual screens.