Minor rewrital (indentation, white space).
Update to cope with the new management of the singletons.
Correct the Python_module handling

- correct the mkdir command to make it cross-platforms
- remove the '/' in the module name (forbidden in win32 systems)
Add a walk kinematic test for the humanoid robot Romeo.

This test is installed in the folder dynamic-graph/tutorial.
It can be vizualized with rviz and robot-viewer.
Clean up code.
Update the walk_romeo sample.

The solver has been moved in sot-application.
Add posture task to forbid arm, head, and chest motions.
Add feedback from experiments.

- Start from 0.01 m/s.
- Add traces for forces.
Fix orientation of the waist.
It is following now the direction of the left foot.
Fix waist orientation as the average value between the right and the left foot.
Adapt postureTaskDofs to the corresponding robot.

Default value blocks all dofs.
Ensure this task has the least priority.
Update Changelog. Merge topic/python in master. Fix issue #2 in github.