Allow international domain names in URL validator (#2668016).
Allow international domain names in URL validator (#2668016).

See pull request #1 for ianb/formencode made 2011-06-24 by silver_.

systemctl/formencode,genixpro/formencode,jvanasco/formencode,formencode/formencode,systemctl/formencode,genixpro/formencode,formencode/formencode,formencode/formencode,systemctl/formencode,jvanasco/formencode,genixpro/formencode,jvanasco/formencode