Remove au_test_harness code and change symlinks to point to new location

lib/cros_build_lib.py

 # Copyright (c) 2010 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.
 
 """Common python commands used by various build scripts."""
 
 import inspect
 import os
 import re
 import subprocess
 import sys
 
 _STDOUT_IS_TTY = hasattr(sys.stdout, 'isatty') and sys.stdout.isatty()
-CROSUTILS_DIRECTORY = os.path.realpath(os.path.dirname(os.path.dirname(
-    __file__)))
+CROSUTILS_DIRECTORY = os.path.dirname(os.path.dirname(
+    os.path.realpath(__file__)))
 
 # TODO(sosa):  Move logging to logging module.
 
 class RunCommandException(Exception):
   """Raised when there is an error in RunCommand."""
   pass
 
 
 def GetCallerName():
   """Returns the name of the calling module with __main__."""
@@ skipping 293 matching lines @@
 
 
 def UnmountImage(root_dir, stateful_dir):
   """Unmounts a Chromium OS image specified by mount dir points."""
   RunCommand(['./mount_gpt_image.sh',
               '--unmount',
               '--rootfs_mountpt=%s' % root_dir,
               '--stateful_mountpt=%s' % stateful_dir,
              ], print_cmd=False, redirect_stdout=True, redirect_stderr=True,
              cwd=CROSUTILS_DIRECTORY)