am 8e1b84e7: Merge "Some battery improvements:" into gingerbread

Merge commit '8e1b84e7654ddeeb77a03f5eca10c6669b1cb42b' into gingerbread-plus-aosp

* commit '8e1b84e7654ddeeb77a03f5eca10c6669b1cb42b':
  Some battery improvements: