[Dovecot] v2.2.8 released

http://dovecot.org/releases/2.2/dovecot-2.2.8.tar.gz http://dovecot.org/releases/2.2/dovecot-2.2.8.tar.gz.sig

+ Mail cache lookups work for the mail being saved. This improves
  performance by avoiding the need to parse the mail multiple times
  when using some plugins (e.g. mail_log).
+ Mail cache works for recently cached data also with in-memory
  indexes.
+ imapc: Many performance improvements, especially when working with
  dsync. Also added imapc_feature=fetch-headers which allows using
  FETCH BODY.PEEK[HEADER.FIELDS (..)] to avoid reading the entire
  header.
+ mail_location = ..:FULLDIRNAME=dbox-Mails is the same as
  :DIRNAME=dbox-Mails, but it will also be used for
  :INDEX and :CONTROL directories. (It should have worked this way
  from the beginning, but can't be changed anymore without breaking
  existing installations).
- Fixed infinite loop in message parsing if message ends with
  "--boundary" and CR (without LF). Messages saved via SMTP/LMTP can't
  trigger this, because messages must end with an "LF.". A user could
  trigger this for him/herself though.
- lmtp: Client was sometimes disconnected before all the output was
  sent to it.
- imap_zlib plugin caused crashes during client disconnection in
  v2.2.7
- replicator: Database wasn't being exported to disk every 15 minutes
  as it should have. Instead it was being imported, causing "doveadm
  replicator remove" commands to not work very well.