am a4ce31f5: Merge "Small fixes to battery stats." into gingerbread

Merge commit 'a4ce31f5e080eae6c97e6f37040db0c7f0fc78f2' into gingerbread-plus-aosp

* commit 'a4ce31f5e080eae6c97e6f37040db0c7f0fc78f2':
  Small fixes to battery stats.