drag phase for touch listeners

A phase for when the user drags their finger out of the geometry of an object with a touch listener attached would be great.

Currently if a user does this the listener stays activated which is annoying for any kind of control buttons.

Related griping in the game dev forum: http://developer.anscamobile.com/forum/2011/03/21/touch-phase-issue#comment-28993 [import]uid: 10903 topic_id: 8134 reply_id: 308134[/import]

For the use case of buttons I think this will help:
http://developer.anscamobile.com/reference/index/stagesetfocus

Beyond that though an event like mouse_out in Flash might be a good idea. [import]uid: 12108 topic_id: 8134 reply_id: 29362[/import]