JM: Remove residual Allegro from editor
JM: Fix 15bpp blenders
JM: Fix 15bpp psychedelia
JM: Initial work on 16bpp blenders
JM: Game and editor can now be used without Allegro
JM: Editor is nearly free of Allegro dependencies
JM: Improvements to airbase on map 2
JM: Remove more Allegro dependencies
JM: Remove a few more Allegro bits from the editor
JM: Stop the Cardinal locking himself in or locking up the Church