Square on Square rotations work!
Circle and Square collisions + rotations done
Fixed Line circle collisions + rotations
Temporarily removed gravity and added some fixes to fine tune the physics.
Added Collision Correction for Square - line, Circle - Circle, and Circle - Line collisions. Still need to do Square - Square and Square - Circle.
Merge remote-tracking branch 'remotes/origin/physics' into pre-release

Conflicts:
	XNA_GameEngine/XNA_GameEngine/XNA_GameEngine/Debug/DebugPlayerObject.cs
	XNA_GameEngine/XNA_GameEngine/XNA_GameEngine/bin/x86/Debug/XNA_GameEngine.exe
	XNA_GameEngine/XNA_GameEngine/XNA_GameEngine/bin/x86/Debug/XNA_GameEngine.pdb
	XNA_GameEngine/XNA_GameEngine/XNA_GameEngine/obj/x86/Debug/XNA_GameEngine.exe
	XNA_GameEngine/XNA_GameEngine/XNA_GameEngine/obj/x86/Debug/XNA_GameEngine.pdb

Merged physics branch into pre-release for recent changes committed to physics.  Fixed minimal merge conflicts in the Debug/DebugPlayerObject.cs file.  Ignored the binary files that will be overwritten by local builds.