For discussions, see the development mailing list thread at
http://article.gmane.org/gmane.games.flightgear.devel/77686 and the forum post
at http://forum.flightgear.org/viewtopic.php?f=4&t=26080. This fix was first
reported at http://forum.flightgear.org/viewtopic.php?f=25&t=24305#p222293.
The fix is to delete one line of broken and non-functional Nasal code.
