genre tag parameter is now -G, but usage() of oggenc still points to -g
I've just (22/12/01) fetched the preRC3 vorbis set including oggenc and found
out that the parameter to set a genre at encodettime in oggenc was changed to -
G instead of -g. This change was documented in the manpage fine, however in the
programs usage() output it's still mentioned as -g.