httpd-xxx.conf and fix configuration if APACHE_VERSION > 20.
- Don't use the MCAL back-end by default for Kronolith, it is
deprecated.
- Deinstall bug reported by John Nielsen <john (at) jnielsen.net>:
respect LHORDEDIR.
- Fix horde-passwd installation / deinstallation.
- Don't bump PORTREVISION, because running installations are not
concerned.
The major changes compared to the Nag 1.x versions are:
* Shared task lists.
* Task alarms.
* vTodo support.
* Tabbed view of all, complete and incomplete tasks.
* Kolab server support.
* Access keys.