Adding new serial command/telemetry to support autopilot features from Communicator.
Added autoPilotState variable to control autopilot.  Temporary hack to remove transmitter stick detection for autopilot features and send only from Communicator.
fixed bug where autopilot turns off when last waypoint is reached.
adapted MAVLink protocol to new autopilot state variable

Merge branch 'development_v4' of https://github.com/AeroQuad/AeroQuad into development_v4

Conflicts:
	AeroQuad/AeroQuad.h