am 1f689f7e: Merge "When notifications are updated, don\'t re-show the ticker unless the text has changed." into gingerbread

Merge commit '1f689f7e35464b1ccd3ce3307b6d92283ee1290d' into gingerbread-plus-aosp

* commit '1f689f7e35464b1ccd3ce3307b6d92283ee1290d':
  When notifications are updated, don't re-show the ticker unless the text has changed.