Updated TestAngleConversions to test Gimbal mobilizer.
Updated TestAngleConversions to test Gimbal mobilizer.

robojukie/simbody,Gjacquenot/simbody,chrisdembia/simbody,scamille/simbody,chrisdembia/simbody,elkingtonmcb/simbody,scamille/simbody,scamille/simbody,simbody/simbody,Gjacquenot/simbody,elen4/simbody,robojukie/simbody,chrisdembia/simbody,simbody/simbody,elkingtonmcb/simbody,Gjacquenot/simbody,robojukie/simbody,elen4/simbody,elkingtonmcb/simbody