newsgroup based expiry(2.3)

[Katsuhiro Kondou]

In article <ylzoxa96pp.fsf at windlord.stanford.edu>,
	Russ Allbery <rra at stanford.edu> wrote;

} > 2) And another which I proposed is let expireover do.  Both have side
} > effects, while they have each advantages.
} 
} I prefer option 2.  I think that having a change in expire.ctl affect all
} existing articles on the spool (except those in CNFS, of course) is a very
} important feature and that we need to continue supporting it.

Now I began to write the code for 2).
-- 
Katsuhiro Kondou