AI 143318: am: CL 143169 am: CL 142870 Fix issue #1724917 (Applications...

AI 143318: am: CL 143169 am: CL 142870 Fix issue #1724917 (Applications (browser, maps, gmail) fail to retain their landscape state after coming out of sleep mode).  We now rely on the listeners last known orientation, and make sure to clear it when enabling/disabling.
  Also do most of the work for issue #1732012 (Only show screen rotation animation when triggered by sensor).  This just needs to be hooked up to the surface flinger API when that appears.
  Original author: hackbod
  Merged from: //branches/cupcake/...
  Original author: android-build
  Merged from: //branches/donutburger/...

Automated import of CL 143318