move control_toolbox package outside of pr2_controllers stack (ros ticket #4942)

[ahendrix]

As far as I can tell (though I've only looked closely at the Pid class), there is nothing PR2-specific in this package. If it existed in a robot-agnostic stack it would be more likely to be discovered, used, debugged, and enhanced by the community. Also it would not require installation of the pr2_controllers stack and all the attendant dependencies.

trac data:

• Owner: sglaser
• Reporter: bouffard
• Reported at: Tue Dec 21 10:49:11 2010
• URL: https://code.ros.org/trac/wg-ros-pkg/ticket/4942