Merge change 546 into donut

* changes:
  Add (hidden for now) purgeable bitmaps
tree: 6936d5bcb9a347ac10e68223725210b64bd649cd
  1. awt/
  2. camera/
  3. cmds/
  4. im/
  5. include/
  6. libs/
  7. opengl/
  8. MODULE_LICENSE_APACHE2
  9. NOTICE