FlightGear - Flight Simulator FGAddon

Cessna-208B: add /sim/model/fallback-model-index.

Cessna-208-Caravan: add /sim/model/fallback-model-index.

Cessna-208B: make engine instruments as bright as the other instruments when lighting is on

2020.3: MD-11: Bugfix to pedestal

MD-11: Bugfix to pedestal

Short_Empire: minor bug fix in the designation of a new mooring with alt+click.

Short_Empire: more improvements to mooring.

Bug fix: Alt+Click would fail to place a buoy at the designated place, now it works.

Also, after the three initial phases, there is a new timer that looks for the nearest
predefined mooring every 5 seconds. The copilot announces any changes and the newly
selected mooring is displayed (buoy and fairway) so it is possible to depart from one
mooring, do a flight, and moor at another, predefined or alt+clicked, place.

Short_Empire: rewrite the mooring code so we always start up moored.

The mooring code used a settimer loop for no reason, and never
repositioned the aircraft, so it was impossible to start on water
since the flightgear launcher does not allow that. For this reason,
this aircraft was almost unusable, despite its obvious qualities. I
have rewritten Systems/mooring.nas to do mooring in three stages and
without a loop:

1. static initialization, notably of the predefined mooring locations.
2. after FDM initialized, select the closest mooring location and teleport there.
(This implies that whatever airport or location you choose in the flightgear
launcher, you will _always_ spawn at the predefined location closest to it!)
3. after the FDM initializes again, place the buoy model and moor to it.

Additionally I have added two more mooring locations, in Corsica and at
Friedrichshafen. These are fictional in the sense they were not part
of the routes flown by Imperial Airways.

Also, renamed Models/Short_Empire-model.xml -> Models/Short_Empire.xml.

Hughes XF 11 : Update from Trunk.

Hughes XF 11 : Update from Trunk.