nnrpd: adding blacklistd support

[Julien ÉLIE]

Hi all,

>> Adding it as --with-blacklist sounds like the right thing to do, yes.
>
> I've submitted a pull request for review at
> https://github.com/InterNetNews/inn/pull/234 for those interested.

Andreas' work is now merged upstream.
blacklistd (shipped with FreeBSD and NetBSD notably) is now natively 
supported by nnrpd.

-- 
Julien ÉLIE

« Le dieu, dont l'oracle est à Delphes, ne parle pas, ne dissimule pas :
   il indique. » (Héraclite d'Éphèse, fragment 93, traduction de Jean
   Voilquin)