[adding docs to nasm] unfulfilled build deps for pdf

[Charles Wilson]

> Is there some part of the package missing?  If so, it isn't clear
> from your message.  What's AFPL?

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").

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