[AD] List of sub bitmaps

[Trent Gamblin <trent@xxxxxxxxxx>]

Is there any reason why bitmaps can't have a list of their child bitmaps? My use case is, I need to update a bitmap, changing it's texture when Android tabs away and back. I didn't notice this before but sub bitmaps have their own "extra" member, so even though the bitmap pointer stays the same, the sub bitmaps are out of date because extra->texture doesn't get updated.

Trent