Update to test scripts to work with both ModemManager and Cromo

test/mm-disable

 #!/usr/bin/python
 
+# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 import dbus
 import mm
 
-manager = mm.ModemManager()
+devices = mm.EnumerateDevices()
 
-devices = manager.manager.EnumerateDevices()
-
-for path in devices:
+for manager, path in devices:
         print path
 
         modem = manager.Modem(path)
 
         modem.Enable(False)