[Dovecot] Some Doveadm Tools lack proper exit codes

Happy New Year Everyone,

and *yes* it's that time of the year to archive old stuff again. Please implement proper error codes to support this (scripting) endeavor.

=> Good

$ doveadm user foo userdb lookup: user foo doesn't exist $ echo $? 2

=> Bad

$ doveadm acl get -u tlx@leuxner.net FOO doveadm(tlx@leuxner.net): Error: Can't open mailbox FOO: Mailbox doesn't exist: FOO ID Global Rights $ echo $? 0

$ doveconf -n | head # 2.1.rc1 (056934abd2ef): /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.3

Thanks Thomas