onak-mail has spooled incoming mail for a long time; fix up the default
config to put this in spool/onak rather than the hardcoded /community
that was previously configured.
var/lib/onak
+var/spool/onak
maintainer_email PGP Key Server Administrator <pgp-keyserver-admin@the.earth.li>
mail_intro_file /community/pgp-keyserver/share/mail_intro
help_dir /community/pgp-keyserver/share
-mail_dir /community/pgp-keyserver/incoming
+mail_dir @STATEDIR@/spool/onak
### If you change this, make sure to put a corresponding help file in
### the help_dir named above