Revert 86501: Make git-cl and update_depot_tools msys-compatible.

git-cl

Index: git-cl
===================================================================
--- git-cl	(revision 86548)
+++ git-cl	(working copy)
@@ -1,5 +1,5 @@
 #!/bin/sh
-# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Copyright (c) 2010 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.
 
@@ -9,14 +9,4 @@
 base_dir=$(dirname "$0")
 
 "$base_dir"/update_depot_tools
-
-# Test if this script is running under a MSys install.  If it is, we will
-# hardcode the path to Python where possible.
-OUTPUT="$(uname | grep 'MINGW')"
-MINGW=$?
-
-if [ -d "$base_dir/python_bin" -a $MINGW = 0 ]; then
-  exec "$base_dir/python_bin/python.exe" "$base_dir"/git_cl.py "$@"
-else
-  exec "$base_dir/git_cl.py" "$@"
-fi
+"$base_dir"/git_cl.py "$@"