Modify scripts to be more informative and add autox/autologin for build script

src/scripts/mod_for_test_scripts/700enableAutoxLogin

Index: src/scripts/mod_for_test_scripts/700enableAutoxLogin
diff --git a/src/scripts/mod_for_test_scripts/700enableAutoxLogin b/src/scripts/mod_for_test_scripts/700enableAutoxLogin
new file mode 100755
index 0000000000000000000000000000000000000000..7a2380ce3ec0cf64390f9e59a8752855760b60dc
--- /dev/null
+++ b/src/scripts/mod_for_test_scripts/700enableAutoxLogin
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+# Copyright (c) 2009 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.
+
+# enable autox login by disabling remembering of last username
+echo "Enabling autologin using autox."
+touch "/root/.forget_usernames"