[racket] OpenBSD port for Racket

I don't like having things on my system that aren't in the package
manager, so I've created a very basic, very unofficial, port for the
OpenBSD ports tree.  (I don't know anything about programming, but I can
read directions.)  I have nothing to test it on except my desktop, so
it may well be broken elsewhere, but it Works For Me.  Possibly it will
be useful for someone else.

See http://www.wistly.net/racket_on_openbsd/