The fuerte branch does not compile due to catkinization

Hello

Since the commit `76a7c410` of install-sot.sh, the package urdf_parser_py is compiled on fuerte
<pre>
    if [ "$ROS_VERSION" != "electric" ]; then
        inst_array[index]="install_ros_ws_package urdf_parser_py"
        let "index= $index + 1"
    fi
</pre>

The current version of the fuerte branch (in the laas repository) actually does not work on fuerte, due to the catkinization of the package.

There are, I think, 4 courses of action possible:
1. Terminate the use on urdf_parser_py for fuerte/electric: In the same way that this package is not compiled on electric, the compilation could be avoided on fuerte in install-sot

2. Restore a working version for fuerte. by
2. a\ "Applying" this pull request, ie deleting the old fuerte branch and install this one instead (I've created a "copy" of this branch, in which I removed the 3 guilty commits, then rebase all the modifications.
2. b\ Simply revert of the 3 guilty commits (I just though of that, surely a better plan).

3. Use the urdfdom (according to the warning message `[DEPRECATED] Please use https://github.com/ros/urdfdom instead`) In this case, the rosinstall files must be updated.

Regards