I've introduced an aliasing arrangement into $FG_ROOT/Aircraft/, so
that we can use simpler identifiers, and so that JSBSim isn't treated
differently from other FDMs. Here's an example:
--aircraft=c172
is now an alias for
--aircraft=c172r
which is an alias for
--aircraft=c172r-jsbsim
David Megginson wrote:
etc. This change depends on my patch to SimGear this morning to allow
the 'include' attribute on the root element of an XML config file.
This also means that we can create new *-set.xml files by subtyping
existing ones. For example, if someone made a DC-3 model for
