v2.2.27 released

[Joseph Tam]

Timo announced:

> https://dovecot.org/releases/2.2/dovecot-2.2.27.tar.gz
> https://dovecot.org/releases/2.2/dovecot-2.2.27.tar.gz.sig
>
> Note that the download URLs are now https with a certificate from Let's Encrypt.

wget complained about

 	ERROR: certificate common name `wiki.dovecot.org' doesn't match requested host name `dovecot.org'.

and indeed, the certificate CN and download URL is mismatched.  The nice thing
about Let's Encrypt is that it's easy to (re)generate the certitcate with SANs
to get rid of this mismatch.

Browser didn't complain though.

Joseph Tam <jtam.home at gmail.com>