Log Message:
Update grhino to 0.11.0.

Changes since 0.9.0:
- Game History window added.
- Forward/backward through game added.  This is similar to undo/redo
  but does not affect existing board moves.
- Don't allow opening more than one Pattern Evaluation window.
- Preferences dialog box is no longer modal.  So game can be played
  even when this dialog box is opened.
- Switch computer color menu is inactive when computer or human
  plays both colors.
- Add missing text domain binding for i18n.
- Add en_GB locale messages.
- GNOME 2 is now required.
- Enable i18n.
- Toolbar added.
- GUI code reorganization.
- Undo/redo menus become active/inactive according to current game
  state.
- Customizing game graphics is supported.
- Reorganize undo/redo mechanism.