- updated to dovecot 1.2.7
    - add man pages
    - IMAP: IDLE now sends "Still here" notifications to same user's
        connections at the same time. This hopefully reduces power usage of
        some mobile clients that use multiple IDLEing connections.
    - IMAP: If imap_capability is set, show it in the login banner.
    - IMAP: Implemented SORT=DISPLAY extension.
    - Login process creation could have sometimes failed with epoll_ctl()
        errors or without epoll probably some other strange things could have
        happened.
    - Maildir: Fixed some performance issues
    - Maildir: Fixed crash when using a lot of keywords.
    - Several fixes to QRESYNC extension and modseq handling
    - mbox: Make sure failed saves get rolled back with NFS.
    - dbox: Several fixes.