Howto:Reset/re-init Troubleshooting

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Background

James has added initial code to work on dynamic subsystem creation, so that subsystems become create-able and removable from commands. Only some subsystems are supported so far, since many have non-default constructors or other complexities (see FlightGear Run Levels for further details). With this, change, it's now possible to dynamically add and remove the traffic-manager at runtime, for example:

 fgcommand( "add-subsystem", props.Node.new( 
{ "subsystem": "traffic-manager", 
"name":"traffic-manager", 
"do-bind-init":1}) 
);

The idea is to improve this further so that more and more subsystems in FlightGear can be optionally toggled on/off at runtime, which should help facilitate other ongoing efforts, like the FGCanvas project for example - ultimately, this will help make FlightGear become more configurable and scalable, but also better usable for other purposes, such as distributed (multi-machine) setups-so that a single binary can be easily used for different purposes.

In addition, it will be much easier for developers to do regression testing and benchmarking once subsystems can be completely disabled, which is another long-standing feature request (see FlightGear Headless), that should also simplify release preparations.