Log message:
add chat/unrealircd6.

Release notes:
https://www.unrealircd.org/docs/What%27s_new_in_UnrealIRCd_6

Note this package changes the pkgsrc file layout from chat/unrealircd
to a more standard affair:

--with-datadir=${VARBASE}/unrealircd
--with-cachedir=${VARBASE}/cache/unrealircd
--with-controlfile=${VARBASE}/run/unrealircd.ctl
--with-logdir=${VARBASE}/log/unrealircd
--with-tmpdir=${VARBASE}/tmp/unrealircd
--with-pidfile=${VARBASE}/run/unrealircd.pid
--with-scriptdir=${PREFIX}/share/unrealircd/scripts