Update to dovecot-1.0.a5.
- Numerous small changes and fixes; see http://www.dovecot.org/list/dovecot/2005-December/010279.html for details.
- Use vendor install target; patch in --with(out)-docs support to facilitate NOPORTDOCS macro.
- Introduce experimental (and probably broken) GSSAPI option.
PR: ports/90606
Submitted by: Robin Breathe <robin@isometry.net>