bavier/guile-derivative-parsers: An implementation of parsing-with-derivatives for GNU Guile.

Eric Bavier be11a52776 Initial commit		%!s(int64=8) %!d(string=hai) anos
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context-free.scm	be11a52776 Initial commit	%!s(int64=8) %!d(string=hai) anos
regular.scm	be11a52776 Initial commit	%!s(int64=8) %!d(string=hai) anos