This commit drops all patches as they have been merged upstream
since 0.9.1. Furthermore, this commit completes the dependencies
of the velocity_controllers and the forward_command_controller
package.

The patches in the meta-ros repository have been submitted and
included in 0.7.3 and hence are deleted in this commit.

The ros-controllers recipes are updated to 0.5.4 to be in line with
https://github.com/ros/rosdistro/blob/5a90bb971b74bc714a1099d36aafad6d05bf68e3/hydro/release.yaml.

Library of ros-controllers.