Update to modification in hpp-corbaserver (commit 7844c6300c925).
Update script test_rrt.py to modification in hpp-corbaserver.
Update script test_rrt.py to modifications in hpp-corbaserver: commit ece89f939.
Update to modification of corba interface method Problem::applyConstraint.
Update to modification in hpp_ros ScenePublisher class

  constructor now takes a robot as input.