Add pylint to depot_tools.

pylint

Index: pylint
diff --git a/git-try b/pylint
old mode 100755
new mode 100644
similarity index 68%
copy from git-try
copy to pylint
index 39b94ce18eac2b9edc229a2d99564a42d7584143..02cd5a4e0e3979ed4d52beb4baa16147ebbd6a5b
--- a/git-try
+++ b/pylint
@@ -1,8 +1,10 @@
 #!/bin/sh
-# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+# pylint -- a shell wrapper for pylint.py.
+
 base_dir=$(dirname "$0")
 
 # Test if this script is running under a MSys install.  If it is, we will
@@ -11,7 +13,7 @@ OUTPUT="$(uname | grep 'MINGW')"
 MINGW=$?
 
 if [ -d "$base_dir/python_bin" -a $MINGW = 0 ]; then
-  PYTHONDONTWRITEBYTECODE=1 exec "$base_dir/python_bin/python.exe" "$base_dir"/git_try.py "$@"
+  PYTHONDONTWRITEBYTECODE=1 exec "$base_dir/python_bin/python.exe" "$base_dir"/pylint.py "$@"
 else
-  PYTHONDONTWRITEBYTECODE=1 exec "$base_dir/git_try.py" "$@"
+  PYTHONDONTWRITEBYTECODE=1 exec "$base_dir/pylint.py" "$@"
 fi