Correct issues with filesystem.

The code can now compile without.

    Both methods take a task as input and forward to Solver.sot.

This does not affect the compilation on Ubuntu 10.04.

This reverts commit 52c7440e.

Add support for additional frames storing sensors position, use it to compute HRP-2 camera positions.

    This reverts commits 33671f54 and
    52fdc8e5.

    These commits introduce a bug in the generation of python modules:
    shared objects wrap.so have been renamed but __init__.py files still try
    to import them with the old name.

Remove the command MAKE_DIRECTORY that has been moved in python.cmake

    - correct the mkdir command to make it cross-platforms
    - remove the '/' in the module name (forbidden in win32 systems)