FlightGear - Flight Simulator FGAddon

J3Cub: Remove unused states. Refactor GUI.

J3Cub: Tricycle configuration contact adjust, more.

J3Cub: Tricycle configuration contact adjust, livery.

J3Cub: Meta data update.

J3Cub: Trainer aircraft trigear configuration.

Metadata tags for B-1B

Lockheed1049h version 2.11.0: add a transponder to the overhead panel (ATC often
requires one over multiplayer).

B1900D: assorted bug fixes.
* Systems/fuel.xml (JSBSim only): fix that the main tanks would continue to feed
the collector tanks even when empty, leading to infinite range.
* Nasal/systems.nas: replace settimer loops with fixed-frequency maketimer loops.
* b190common.xml: add support for limits; add weight and speed limits.
Also factorize the loading of nasal modules.
* b1900d-set.xml, b1900d-ysm-set.xml: loading of nasal modules factorized above.

707: minor cleanup in fuel-and-payload.nas
* make the crossfeed flow per tank configurable through a property.
* prevent crossfeeding more fuel than a sending tank contains (defensive code,
I'm not entirely sure this is necessary).
* /b707/fuel/automatic-management: new; if true, switch all boost pumps to on
automatically whenever all sending tanks are empty.

707: do not pollute the property tree of remote aircraft over multiplayer.

Use relative property path names everywhere except in the FDM and
systems that are loaded only when the 707 is the local aircraft. The
absolute property names in the model .xml files used to pollute the
property tree of all other aircraft over MP, now they are all under
/ai/models/multiplay[x]/.