Use CollisionMesh in TriangleMeshTriangleMeshDcdContact
Merge branch 'wip/meshWithNormalInfo' of git.assembla.com:OpenSurgSim into wip/meshWithNormalInfo

Conflicts:
	SurgSim/Collision/Mesh-inl.h
	SurgSim/Collision/Mesh.cpp
	SurgSim/Collision/Mesh.h
Fix TriangleMeshTriangleMeshDcdContact UnitTest