[Dovecot] v2.2.6 released

[Timo Sirainen]

http://dovecot.org/releases/2.2/dovecot-2.2.6.tar.gz
http://dovecot.org/releases/2.2/dovecot-2.2.6.tar.gz.sig

I didn't have time to look into the latest reported dsync replication bugs, but this release should have been done a long time ago already and I'm busy for next few days, so no more waiting. Things seem to be working quite well in general though.

        * acl: If public/shared namespace has a shared subscriptions file for
          all users, don't list subscription entries that are not visible to
          the user accessing it.

        + doveadm: Added "auth lookup" command for doing passdb lookup.
        + login_log_format_elements: Added %{orig_user}, %{orig_username}
          and %{orig_domain} expanding to the username exactly as sent by
          the client (before any changes auth process made).
        + Added ssl_prefer_server_ciphers setting.
        + auth_verbose_passwords: Log the password also for unknown users.
        + Linux: Added optional support for SO_REUSEPORT with
          inet_listener { reuse_port=yes }
        - director: v2.2.5 changes caused "SYNC lost" errors
        - dsync: Many fixes and error handling improvements
        - doveadm -A: Don't waste CPU by doing a separate config lookup
          for each user
        - Long-running ssl-params process no longer prevents Dovecot restart
        - mbox: Fixed mailbox_list_index=yes to work correctly