crafty - update license

[kurthindenburg (Kurt Hindenburg)]

Ticket to try to resolve what license crafty is under. What's the correct license in macports?

​http://metadata.ftp-master.debian.org/changelogs//non-free/c/crafty/crafty_23.4-6_copyright

Debian has received written permission in the form of an e-mail from
Professor Hyatt:

Robert M. Hyatt wrote:
> 
> you have my permission to distribute this code just as you did
> before.  I am only trying to stop people from copying the source
> and then calling it their own and entering it into chess tournamennts,
> something that has now happened at least 3 times...
> 
> Bob
> 
> Robert Hyatt                    Computer and Information Sciences
> hyatt@cis.uab.edu               University of Alabama at Birmingham
> (205) 934-2213                  115A Campbell Hall, UAB Station
> (205) 934-5473 FAX              Birmingham, AL 35294-1170


On Thu 14. Mai 22:13:48 CEST 2009 autobuilding was requested 
by Oliver Korff <ok@xynyx.de> of nonfree@release.debian.net, 
this is the mail snippet:

...
I would like to request autobuilding crafty. The licence is strictly non-free, 
but we have the explicit written permission to redistribute of the upstream 
author.

I have had contact with him recently and am convinced that the reason for 
making it non-free, is the code abuse in computer chess tournaments as 
mentioned in the copyright file.

We also do not alter craftys name or copyright notice, so everything that 
matters to the upstream author stays intact. Autobuilding does not interfere 
with that.

[jmroot (Joshua Root)]

The copyright file says that you may not distribute the software without getting the author’s permission. The above quote says Debian has done that. We have not (yet). If we were to get permission for MacPorts to distribute it, Restrictive/Distributable would be the most appropriate license value. It sounds like our users would have to get their own permission if they wish to redistribute.

[kurthindenburg (Kurt Hindenburg)]

r147093 I haven't bothered asking the author for an exception like Debian received.