Speed up bullet2 build.
Some physics options.
Add beginnings of ragdoll.
Add ragdoll constraints (joints).
Minor.
Add .obj-file parser.
Switch hingejoints to 6Dof-joints.
Switch cone-twist-joints for 6Dof-joints.
Minor.
Add some shader convenience functions.
Minor.
Add class KinematicChain.
Jerky jacobian thingy.
Kind of working jacobian thingy.