Log Message:
Update to Dovecot 1.2.4, Sieve to 0.1.12 and ManageSieve to 0.11.9, provided by
Edgar Fuss <ef@math.uni-bonn.de>.

Changes in Dovecot 1.2.4: 

* acl: When looking up ACL defaults, use global/local default files if they
  exist. So it's now possible to set default ACLs by creating dovecot-acl file
  to the mail root directory.

+ imap/pop3 proxy: If proxy destination is known to be down, fail connections
  to it immediately.
+ imap/pop3 proxy: Added proxy_timeout passdb extra field to specify proxy's
  connect timeout.
- Fixed a crash in index file handling.
- Fixed a crash in saving messages where message contained a CR character that
  wasn't followed by LF (and the CR happened to be the last character in an
  internal buffer).
- v1.2.3 crashed when listing shared namespace prefix.
- listescape plugin: Several fixes.
- autocreate plugin: Fixed autosubscribing to mailboxes in subscriptions=no
  namespaces.

Changes in Sieve 0.1.12:

+ Testsuite: added support for testing binaries stored on disk.
+ Implemented the new date extension. This allows matching against date values
  in header fields and the current date at the time of script evaluation.

Changes in ManageSieve 0.11.9:

* Adjusted to changes in the Dovecot login proxy API. This release therefore
  depends on Dovecot v1.2.4.
+ Reintroduced ability to abort SASL with "*" response. Latest ManageSieve
  specification includes it.