Added parameter for roll angle in CIRCLE mode (previously was predefined as maxRoll/3).
Changed default roll for CIRCLE to 20 deg.
Flaps to pitch mixer added
Changed Flaps to Pitch kff sign
Merge branch 'TalonCustom'

Conflicts:
	ArduPlane/Parameters.h
Merge branch 'master' of https://github.com/SergeGolubev/ardupilot