[Dovecot] v1.2.rc2 released

http://dovecot.org/releases/1.2/rc/dovecot-1.2.rc2.tar.gz http://dovecot.org/releases/1.2/rc/dovecot-1.2.rc2.tar.gz.sig

Somehow I forgot to check that "make distcheck" finished successfully in rc1, so rc1 didn't actually even fully compile. No other changes since rc1 than the compile fix.