[vorbis] Adding a --version option to vorbiscomment

[Victoria E. Lease]

[David Balazic]
> --version is a standard option that reports the version of the program.
> 
> ALL programs in the world should support it !

...all programs that use GNU's getopt(), which supports
--long-options, perhaps. It is arguable whether all programs in the
world should use that, though... I can think of many cases in which
one would want to avoid that, most obvious of which is aversion to
GPL taint... also, programs with no real commandline interface...

Just a word against sweeping GNU/Linux-centric statements. :)

-- 
   Victoria E. Lease <vlease at floofy-skirts.org>
C66F 5745 AE21 B21F 5326  FA12 DBC2 9245 9475 3F70

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