[Dovecot] v1.2.rc8 released

http://dovecot.org/releases/1.2/rc/dovecot-1.2.rc8.tar.gz http://dovecot.org/releases/1.2/rc/dovecot-1.2.rc8.tar.gz.sig

Last few fixes before tomorrow's v1.2.0 release. Also this release was
built in dovecot.org to make sure I can make a usable Dovecot release
while not at work/home. :)

- Fixed building LDAP as plugin
- Fixed starting up in OS X