Merge pull request #377 from RichardHitt/issue376

Parse url according to rfc 1738: add separate define for TLD.  Closes 376.

src/common/url.c

@@ -347,9 +347,10 @@ do_an_re(const char *word,int *start, int *end, int *type)
 }
 
 /*	Miscellaneous description --- */
-#define DOMAIN "[-a-z0-9]+(\\.[-a-z0-9]+)*\\.[a-z]+"
+#define DOMAIN "[a-z0-9][-a-z0-9]*(\\.[-a-z0-9]+)*\\."
+#define TLD "[a-z][-a-z0-9]*[a-z]"
 #define IPADDR "[0-9]+(\\.[0-9]+){3}"
-#define HOST "(" DOMAIN "|" IPADDR ")"
+#define HOST "(" DOMAIN TLD "|" IPADDR ")"
 #define OPT_PORT "(:[1-9][0-9]{0,4})?"
 
 GRegex *