[Dovecot] v1.2.6 released

http://dovecot.org/releases/1.2/dovecot-1.2.6.tar.gz http://dovecot.org/releases/1.2/dovecot-1.2.6.tar.gz.sig

A couple of random things:

• I decided to start using "hg sign" to gpg sign all releases in mercurial repository.
• v2.0.alpha1 will hopefully be released in a week or two.

Changes since 1.2.5:

* Upgraded to Unicode 5.2.0

+ Added authtest utility for doing passdb and userdb lookups.
+ login: ssl_security string now also shows the used compression.
- quota: Don't crash with non-Maildir++ quota backend.
- imap proxy: Fixed crashing with some specific password characters.
- dovecot --exec-mail was broken.
- Avoid assert-crashing when two processes try to create index at the
  same time.