lang/nml: Mark as BROKEN, deprecate and set expiration date to 2021-12-31

Abandoned upstream, last release 2004-04-19 and doesn't compile
Reference: PR 234720

PR:		234720
Reported by:	emaste and mikael
Approved by:	arrowd (mentor)
Differential Revision:	https://reviews.freebsd.org/D32218