Fix checkout root detection for git

gclient_utils.py

 # Copyright 2009 Google Inc.  All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #      http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 23 matching lines @@
     self.cwd = cwd
     self.retcode = retcode
     self.stdout = stdout
 
 
 def CheckCall(command, cwd=None, print_error=True):
   """Like subprocess.check_call() but returns stdout.
 
   Works on python 2.4
   """
-  logging.debug(command)
+  logging.debug("%s, cwd=%s" % (str(command), str(cwd)))
   try:
     stderr = None
     if not print_error:
       stderr = subprocess.PIPE
     process = subprocess.Popen(command, cwd=cwd,
                                shell=sys.platform.startswith('win'),
                                stdout=subprocess.PIPE,
                                stderr=stderr)
     output = process.communicate()[0]
   except OSError, e:
-    raise CheckCallError(command, cwd, errno, None)
+    raise CheckCallError(command, cwd, e.errno, None)
   if process.returncode:
     raise CheckCallError(command, cwd, process.returncode, output)
   return output
 
 
 def SplitUrlRevision(url):
   """Splits url and returns a two-tuple: url, rev"""
   if url.startswith('ssh:'):
     # Make sure ssh://test@example.com/test.git@stable works
     regex = r"(ssh://(?:[\w]+@)?[-\w:\.]+/[-\w\./]+)(?:@(.+))?"
@@ skipping 260 matching lines @@
   """Returns the difference subpath minus root."""
   root = os.path.realpath(root)
   subpath = os.path.realpath(subpath)
   if not subpath.startswith(root):
     return None
   # If the root does not have a trailing \ or /, we add it so the returned
   # path starts immediately after the seperator regardless of whether it is
   # provided.
   root = os.path.join(root, '')
   return subpath[len(root):]