[MJCF import] improved humanoid.xml, inverted_pendulum.xml import (automatically add dummy-links to connect multiple joints between bodies) [MJCF import] fix bug in quaternion conversion (w,x,y,z) -> (x,y,z,w)
hook up the loadMJCF importing MuJoCo xml files in pybullet and shared memory API b3LoadMJCFCommandInit