Log Message:
Update dovecot2-pigeonhole to 0.4.14.

v0.4.14 26-04-2016 Stephan Bosch <stephan@rename-it.nl>

* The address test now allows specifying the X-Original-To header.
+ Implemented the Sieve imapsieve extension and its IMAP counterpart
  (RFC 6785) as a set of plugins. This allows running Sieve scripts at IMAP
  activity, rather than at delivery. There are also facilities for the
  familiar sieve_before/sieve_after administrator scripts. A user script is
  defined for a mailbox using an IMAP METADATA entry, whereas administrator
  scripts are configured using mailbox matching rules defined in the plugin
  settings.
+ Adjusted the Sieve ihave extension to allow capability tests to be performed
  at runtime. This way, scripts can be written that work both at delivery and
  from IMAP.
+ Implemented support for runtime trace debugging. This means that detailed
  information about which commands, actions and tests are performed is written
  to a file. That file is created in the configured directory, but only if
  that directory exists. This way, a particular user can be easily singled out
  for debugging. This works much like the Dovecot rawlog facility. The trace
  output is identical to what is produced using sieve-test with its "-t"
  command line option.
+ Added a "sieve_user_email" setting that configures the user's \ 
primary email
  address. This is mainly useful to have a user email address available in
  IMAP, where envelope data is unavailable.
+ Implemented the dovecot-specific "vnd.dovecot.report" extension. \ 
This allows
  sending report messages in the Message Abuse Reporting Format (RFC 5965).
    - extprograms plugin: Fixed epoll() panic caused by closing the output FD
      before the output stream.
    - Made sure that the local part of a mail address is encoded properly using
      quoted string syntax when it is not a dot-atom.