Fix arguments to applyRotationDelta.
Merge pull request #2942 from ey6es/master

Fix arguments to applyRotationDelta.
Remove "fromBind" arg in Model::setJointRotation

It was always set 'true'.
merge upstream/master into andrew/inertia
Make JointState a proper class

JointState gets a pointer to its corresponding FBXJoint
cleaner initialization of JointState
add JointState::updateWorldTransform()