Fix mouse buttons on Carbon for Snow Leopard and fix for issue 414.
Fix mouse buttons on Carbon for Snow Leopard and fix for issue 414.

infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore,infowantstobeseen/pyglet-darwincore