Log Message:
Update to Dovecot 1.2.1, Sieve 0.1.8 and ManageSieve 0.11.7.

Changelog for Dovecot 1.2.1: Mainly fixes to some issues found by people when
upgrading to v1.2.0.

* GSSAPI: Changed logging levels and improved the messages.  Changed the way
  cross-realm authentication handling is done, hopefully it's working now for
  everyone.
* imap/pop3 logins now fail if home directory path is relative.  v1.2.0 deliver
  was already failing with these and they could have caused problems even with
  v1.1.
* IMAP: Custom authentication failure messages are now prefixed with [ALERT] to
  get more clients to actually show them.

+ Improved some error messages.
- pop3: AUTH PLAIN was broken when SASL initial response wasn't given.
- mbox: New mailboxes were created with UIDVALIDITY 1.
- quota-fs was defaulting to group quota instead of user quota.
- Fixed ACLs to work with mbox.
- Fixed fchmod(-1, -1) errors with BSDs
- convert plugin / convert-tool: Fixed changing hierarchy separators in mailbox
  names when alt_hierarchy_char isn't set.

Changelog for Sieve v0.1.8:

- Fixed AIX compile problem. For portability, the typeof operator is not used
  anymore.
+ Added partial support for the deprecated notify extension.  However, it turns
  out that the implementation provided by cmusieve is even older (2001),
  meaning that this is currently not backwards compatible with cmusieve. Should
  be fixed in next release.

Changelog for ManageSieve v0.11.7:

* Adjusted to changes in the Dovecot login API. This release now depends on
  Dovecot v1.2.1 or newer.
* Incorporated various small changes in IMAP into ManageSieve.  This includes
  properly enabling the generation of core dumps.
- The previous release implicitly resolved the FreeBSD script truncation error.
  This release adds a small correction to the code that detects the truncation.
- Fixed panic occurring when many errors are produced by the Sieve compiler
  (bug found by Pascal Volk).
- Fixed memory leak in the PUTSCRIPT command.

(ManageSieve patch)
- Forgot to add the managesieve_logout_format setting to the config file. Now
  it works (bug reported by Pascal Volk).