#18 Discard C plug-ins

[Joachim Schrod]

Replace GNU regex by Lisp regexp library, e.g., code of
Paul Graham or any other Lisp regex library.
CL-PPCRE seems to be quite standard, is also available
natively in Allegro.

[Joachim Schrod]

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Of course, ordrules must be rewritten in Lisp as well.

[Joachim Schrod]

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CLISP comes with a regexp engine, at first we only need to rewrite ordrules.
And this will get us a distribution that can be easily installed on Windows and on OS X as well, since we have CLISP there.