git cl assumes no shell is used.

This is necessary for msysgit usage on windows.

R=dpranke@chromium.org
BUG=
TEST=


Review URL: http://codereview.chromium.org/7858008

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@100267 0039d316-1c4b-4281-b951-d872f2087c98

git_cl.py

@@ -55,7 +55,7 @@ def DieWithError(message):
 
 def RunCommand(args, error_ok=False, error_message=None, **kwargs):
   try:
-    return subprocess2.check_output(args, **kwargs)
+    return subprocess2.check_output(args, shell=False, **kwargs)
   except subprocess2.CalledProcessError, e:
     if not error_ok:
       DieWithError(