Added velocity functions, translational and rotational.
Merge branch 'physics_api_fix_2012-03-11' of https://github.com/productivememberofsociety666/Blitwizard into physics_api_fix_2012-03-11
Removed all OCD ifdefs and fixed minor bug.
Merge branch 'jonas' of https://github.com/JonasT/Blitwizard into jonas