http://dovecot.org/releases/2.2/dovecot-2.2.1.tar.gz
http://dovecot.org/releases/2.2/dovecot-2.2.1.tar.gz.sig
- mailbox_list_index=yes was broken.
- LAYOUT=index didn't list subscriptions.
- auth: Multiple master passdbs didn't work.
- Message parsing (e.g. during search) crashed when multipart message
didn't actually contain any parts.