[Dovecot] v2.2.9 released

[Timo Sirainen]

http://dovecot.org/releases/2.2/dovecot-2.2.9.tar.gz
http://dovecot.org/releases/2.2/dovecot-2.2.9.tar.gz.sig

        + Full text search indexing can now be done automatically after
          saving/copying mails by setting plugin { fts_autoindex=yes }
        + replicator: Added replication_dsync_parameters setting to pass
          "doveadm sync" parameters (for controlling what to replicate).
        + Added mail-filter plugin
        + Added liblzma/xz support (zlib_save=xz)
        - v2.2.8's improved cache file handling exposed several old bugs
          related to fetching mail headers.
        - v2.2.7's iostream handling changes were causing some connections
          to be disconnected before flushing their output (e.g. POP3 logout
          message wasn't being sent)