Collision detection finally working

I finally have collision detection working in my little game engine and it seems to be working great. I had to borrow some code from Irrlicht in order to get it working how I wanted - hopefully Niko will let me make it a part of OgreOpcode. Now that this big task is out of the way I have a bunch of smaller, easier tasks to finish (like having collisions cause scripting events).

Once I get a small working game framework together I may release it to spare others the pain I had to go through. Making games shouldn't be difficult!