Add a test for the new Optimizer::getAlgorithm() method.
Add a test for the new Optimizer::getAlgorithm() method.

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