AI 146582: am: CL 146481 am: CL 146394 Add ExampleAppWidgetConfigure to manifest...

AI 146582: am: CL 146481 am: CL 146394 Add ExampleAppWidgetConfigure to manifest and correct update issues.
  This adds widget configuration to manifest so we don't crash when trying to insert.  We also correctly push a second update once prefix title has been saved; previously we showed a stale title until next widget update.  Also return the title prefix correctly for a given appWidgetId.
  Original author: jsharkey
  Merged from: //branches/cupcake/...
  Original author: android-build

Automated import of CL 146582