Bug#162110: License clarification and URL

[Kenneth Pronovici <pronovic@skyjammer.com>]

I have contacted the author and received permission to package this
module.

   URL: http://www.cpan.org/modules/by-module/Memoize/

   # Copyright 1998, 1999, 2000, 2001 M-J. Dominus.
   # You may copy and distribute this program under the
   # same terms as Perl itself.  If in doubt,
   # write to mjd-perl-memoize+@plover.com for a license.