Log Message:
shells/standalone-tcsh: Mark NOT-FOR-DRAGONFLY

This package will install tcsh in the /bin directory (not ${LOCALBASE}/bin).
DragonFly already has tcsh in the base system, so this package will replace
it with no ability to restore the system version.  This is not desired.

shells/tcsh still works should there be any need for a pkgsrc version installed
at ${LOCALBASE}/bin.