v2.2.33 released

[Timo Sirainen]

https://dovecot.org/releases/2.2/dovecot-2.2.33.tar.gz
https://dovecot.org/releases/2.2/dovecot-2.2.33.tar.gz.sig 

We're getting close to the last v2.2.x releases. Hopefully we'll have the first v2.3 beta releases out soon.

 * doveadm director commands wait for the changes to be visible in the
   whole ring before they return. This is especially useful in testing.
 * Environments listed in import_environment setting are now set or
   preserved when executing standalone commands (e.g. doveadm)

 + doveadm proxy: Support proxying logs. Previously the logs were
   visible only in the backend's logs.
 + Added %{if}, see https://wiki2.dovecot.org/Variables#Conditionals
 + Added a new notify_status plugin, which can be used to update dict
   with current status of a mailbox when it changes. See
   https://wiki2.dovecot.org/Plugins/NotifyStatus
 + Mailbox list index can be disabled for a namespace by appending
   ":LISTINDEX=" to location setting.
 + dsync/imapc: Added dsync_hashed_headers setting to specify which
   headers are used to match emails.
 + pop3-migration: Add pop3_migration_ignore_extra_uidls=yes to ignore
   mails that are visible in POP3 but not IMAP. This could happen if
   new mails were delivered during the migration run.
 + pop3-migration: Further improvements to help with Zimbra
 + pop3-migration: Cache POP3 UIDLs in imapc's dovecot.index.cache
   if indexes are enabled. These are used to optimize incremental syncs.
 + cassandra, dict-sql: Use prepared statements if protocol version>3.
 + auth: Added %{ldap_dn} variable for passdb/userdb ldap
 - acl: The "create" (k) permission in global acl-file was sometimes
   ignored, allowing users to create mailboxes when they shouldn't have.
 - sdbox: Mails were always opened when expunging, unless
   mail_attachment_fs was explicitly set to empty.
 - lmtp/doveadm proxy: hostip passdb field was ignored, which caused
   unnecessary DNS lookups if host field wasn't an IP
 - lmtp proxy: Fix crash when receiving unexpected reply in RCPT TO
 - quota_clone: Update also when quota is unlimited (broken in v2.2.31)
 - mbox, zlib: Fix assert-crash when accessing compressed mbox
 - doveadm director kick -f parameter didn't work
 - doveadm director flush <host> resulted flushing all hosts, if <host>
   wasn't an IP address.
 - director: Various fixes to handling backend/director changes at
   abnormal times, especially while ring was unsynced. These could have
   resulted in crashes, non-optimal behavior or ignoring some of the
   changes.
 - director: Use less CPU in imap-login processes when moving/kicking
   many users.
 - lmtp: Session IDs were duplicated/confusing with multiple RCPT TOs
   when lmtp_rcpt_check_quota=yes
 - doveadm sync -1 fails when local mailboxes exist that do not exist
   remotely. This commonly happened when lazy_expunge mailbox was
   autocreated when incremental sync expunged mails.
 - pop3: rawlog_dir setting didn't work