audio/moc: Remove BDB5 support and improve port
- Switch to DISTVERSION
- Use USES= localbase:ldflags helper
- Disable BDB5 (deprecated)
- Add libogg.so as dependency for VORBIS option
- Minor style changes
- Remove GNU_CONFIGURE_MANPREFIX
PR: 279123
Approved by: portmgr (maintainer timeout, 2+ weeks)