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 description is not indented after line breaks. All other
information, i.e., the dependencies and SRCURI, are indented with
four spaces after line breaks. Shell scripts are indented with
multiples of four spaces.

In recipes-ros, I located and checked for tabulators and spacing
with these bash commands:

egrep '^ [^ ]+' . --exclude *.patch -R
egrep '^  [^ ]+' . --exclude *.patch -R
egrep '^   [^ ]+' . --exclude *.patch -R
egrep '^    [ ]+[^ ]+' . --exclude *.patch -R

While going through the recipes and manually improving the layout,
I also adjusted the descriptions to use maximal 100 characters
per line.

This commit further adds a simple fix to the patch for the ros-comm
repository.

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.