Decrypt entire command in gamestats

Previously it would decrypt by packet, now it will wait for the entire
packet before trying to decrypt. This fixes games like Mega Man Star
Force.

gamespy_gamestats_server.py

@@ -103,8 +103,14 @@ class Gamestats(LineReceiver):
     def rawDataReceived(self, data):
         try:
             # Decrypt packet
-            msg = self.remaining_message + str(self.crypt(data))
+            self.remaining_message += data
+
+            if "\\final\\" not in data:
+                return
+
+            msg = str(self.crypt(self.remaining_message))
             self.data = msg
+            self.remaining_message = ""
 
             commands, self.remaining_message = gs_query.parse_gamespy_message(msg)
             logger.log(logging.DEBUG, "STATS RESPONSE: %s" % msg)