am 10f7c1b8: Merge "Explicitly mention again that startCommand() runs on the main thread." into gingerbread

Merge commit '10f7c1b8ecf110fd9c646eb3fcb51e6ee74c5885' into gingerbread-plus-aosp

* commit '10f7c1b8ecf110fd9c646eb3fcb51e6ee74c5885':
  Explicitly mention again that startCommand() runs on the main thread.