Added a hack to deal with common practice 'uk' for United Kingdom

Tools/world/world

@@ -265,6 +265,13 @@ nameorgs = {
     "net": "networking",
     "org": "non-commercial",
     "int": "international",
+    # this isn't in the same class as those above, but for some reason (of
+    # which I am not aware), `uk' is the common practice country code for the
+    # United Kingdom.  AFAICT, the official `gb' code is routinely ignored!
+    # If you have a clue as to why this is, or if there is an official
+    # document describing this, please let me know.  ISO3166 certainly makes
+    # no mention of this.
+    "uk": "United Kingdom (common practice)",
     }