Fix problems with upper-case in domain-match.

The domain-match rewrite didn't take into account
that domain names are case-insensitive, so things like

--address=/Example.com/.....

didn't work correctly.

src/domain-match.c

@@ -494,7 +494,7 @@ static int order(char *qdomain, size_t qlen, struct server *serv)
   if (qlen > dlen)
     return -1;
 
-  return strcmp(qdomain, serv->domain);
+  return hostname_order(qdomain, serv->domain);
 }
 
 static int order_servers(struct server *s1, struct server *s2)