Object oriented update to python robot interface, multi-robot control.

[apullin]

The Velociroach python control code has been updated to use an object oriented approach to communicating with robots. This will make it possible to control multiple robots at once. ( @abuchan )

Branch can be found at:
https://github.com/apullin/roach/tree/multirobot_python_devel

I do not have a VR with AMS encoders on it, so I cannot verify function.

Function testing is currently blocked by flash and telemetry debugging. TODO's exist.

Broad notes:

• updates in experiment_multibot.py , template for running robot
• interactive shell has been removed from this template
• "maneuver" primitives for switching have been removed, using gaitConfig structures should make this straightforward to reimplement.