the root PropertyNode element. For example,
--aircraft=c172
is now an alias for
--aircraft=c172r
which is an alias for
--aircraft=c172r-jsbsim
All JSBSim *-set.xml files have been renamed to include 'jsbsim'
explicitly in their names; the ones without 'jsbsim' are now aliases
to the default, whatever that may be.
Here are some new, simpler aircraft identifiers:
--aircraft=cub
--aircraft=747
--aircraft=sopwithCamel
--aircraft=c310-3d
and so on.
This system allows users to create new *-set.xml files by overriding
parts of existing ones rather than by cut-and-paste.
