FlightGear - Flight Simulator FGAddon

an24b: Mostly cleanup; new KPPM model; minor additions to Fire Ext System

mosquito/mosquito-common.xml: updated version to 3.3.5.

mosquito/Models: turn off shadows for propellor discs.

mosquito: fixed right cooling flap animation (was rotating in wrong direction).

However in both bomber and fighter-bomber the lower wings near cooling flap
seem to be slighty assymetric (in different ways), so the appearence when
cooling flap is closed isn't quite right.

mosquito: improved rudder-controlled differential braking.

Keep the correct left/right balance while overall force changes as we gradually
interpolate to final values.

Aermacchi MB 339: Compatibility with Compositor

Diamond DA 42 "Twin Star": Compatibility with Compositor.

Update CPDLC dialog

Update CPDLC dialog.

Arcus: various improvements by D-SVEN and some by D-ECHO
* Add more instruments
* Add rear panel
* Change model names for better MP name visibility