* FDM: modify the engine so that it idles at 400 rpm instead of 1300 rpm.
This makes it possible to stop on the runway on landing :)
(does not affect the LF.IX, not tested)
* do not pollute the property trees of remote aircraft over MP:
find Models/ -name '*.xml' -exec sed -r -i 's,>/,>,g' {} \;
* replace /controls/engine/engine with /controls/engines/engine so that
all property names are consistent.