Debian dovecot-auth case for init script

Debian’s init script for Dovecot doesn’t cover the dovecot-auth only case (i.e. “protocols = none”). I’m starting to use dovecot-auth to handle auth requests from Postfix (it does do better than SASL in for my needs), and since I like keeping things consistent with system startup and shutdown, I changed the init script. Also submitted as bug 460823 for the dovecot-common package.

http://ninjamonkey.us/files/dovecot-auth-init.patch