use ground track as route following autopilot
Add extended hud. This isn't like an F-14b - more like F-14D but not quite; so there is an option to turn it off.

Much more information in each of the modes; such as airspeed, alt, rad alt, flaps, gear.
2. Target name and distance from radar
3. modifications to radar to acquire target id
4. added option to ground services.
Add flight director (glideslope / localizer to VDI). This isn't right as it uses the civilian system not ARA-63 but this is all we can do.
Better handling of route altitudes from waypoints; special handling of GS waypoints.

Make the autopilot dialog altitude set the appropriate value in JSBSim.
Add 400hz hum when main bus powered
removed duff value.
Merge remote-tracking branch 'origin/master' into flightgear-release