[texinfo-pretest] Problems with spanish update

[Karl Berry]

    Attached you can find a `texinfo.cnf' for UTF-8 support.  

Werner, it's extremely interesting, but I am not sure what I can do with
it.  Could you please explain a little?  E.g., will it break current
behavior if I include it in texinfo.tex?  And, is it complete enough
that if I enabled it for @documentencoding utf8 (or whatever), it could
actually handle a reasonable set of UTF-8 input files?  That would be
stupendous.

    % This UTF-8 parser is based on LaTeX's `utf8.def'.

Also, I hate to ask this, but how much does "based" mean?  LPPL and GPL
are not compatible :(.

Thanks,
Karl