Ghostscript is released (first) under a non-free but opensource license ("Alladin Free Public License"), and then six months to one year later under the GPL (when it is called "GNU Ghostscript").Is there some part of the package missing? If so, it isn't clear from your message. What's AFPL?
Currently, the AFPL version of ghostscript is at version 8.00, while GNU ghostscript is at 7.05.
We (cygwin) distribute GNU ghostscript.
So I *think* what the poster was saying, was that the nasm docs require a ghostscript newer than 7.05 --- e.g. 8.0, which is currently available only as an AFPL release.
--Chuck
