- Update to version 0.6.0.20071206.
- Use my FTP server as mirror instead of FreeBSD's MASTER_SITE_LOCAL (to match
the games/freeorion port, which is already there because it's about 60MB).
- Add "-I." to CFLAGS to avoid an error when updating the port.
- Implement previously commented out OGRE option.
- Remove "ktrace" command from do-build (I forgot it from an earlier test).