[Dovecot] Released v1.1.beta2

http://dovecot.org/releases/1.1/beta/dovecot-1.1.beta2.tar.gz http://dovecot.org/releases/1.1/beta/dovecot-1.1.beta2.tar.gz.sig

Several bug/crashfixes. deliver now supports -a parameter (see http://wiki.dovecot.org/LDA) which allows Sieve plugin v1.1.2 to use envelope :detail "to" checks.

I also did one more API change for mailbox_transaction_commit*().

There's probably something still wrong with SORT command, but other than that I've fixed everything that's been reported.