**/*.py: use /usr/bin/env to find python

src/trusted/validator_arm/dgen_baselines.py

-#!/usr/bin/python
+#!/usr/bin/env python
 #
 # Copyright (c) 2013 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 
 """
 Responsible for generating baseline classes based on representations
 in the decoder table file armv7.table.
 
@@ skipping 369 matching lines @@
      of the row."""
   action = row.action.copy()
   return dgen_core.Row(list(row.patterns), _AddBaselineToAction(action))
 
 def _AddBaselineToAction(action):
   action = action.copy()
   if (isinstance(action, dgen_core.DecoderAction) and
       dgen_decoder.ActionDefinesDecoder(action)):
     action.define('baseline', BaselineName(action))
   return action