TradHeli: Change user description for COLYAW parameter.
TradHeli: Creating method to operate direct drive tail rotor drive controls.  Hijacked the Ch7 output currently into use for external gyros, and made it multi-funcitonal.

Important Note: The required PWM on Ch8 to start the motor in RSC Mode moved up from 100 to 400. This is to facilitate two-stage switching of the motors with PWM>100 starting the tail motor, and PWM>400 starting the main motor.