Change rotationSet to rotationIsDefaultPose for JointData
Also for translation. Fixed all code to flip boolean value.
Created EntityJointData so that the ModelEntity stuff doesn't need to change.
* Moved JointData into shared library
* added methods to the rig to copy into and out of JointData
* JointData translations must be in meters this is so the
fixed point compression wont overflow, also, it's a
consistent wire format.
