am 01e4cfc4: Some ActivityThread/ActivityManager cleanup.

Merge commit '01e4cfc47d0a2c7e7ab383d2fb23224ec52c0301' into gingerbread-plus-aosp

* commit '01e4cfc47d0a2c7e7ab383d2fb23224ec52c0301':
  Some ActivityThread/ActivityManager cleanup.