How to block IP addresses from any country

New Firewall Builder CookBook recipe: How to block IP addresses from any country.
Using geolocation API provided by http://blogama.org and following up and expanding his HOWTO "Blocking IP address of any country with iptables" found at  http://blogama.org/node/62. In addition to showing how iptables script demonstrated in the original HOWTO can be generated with Firewall Builder using Address Table objects, I also demonstrate how the same set of objects can be used to produce configuration for PF.