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

build/fake_storage.py

-#!/usr/bin/python
+#!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Fake (similar in memory implementation) version of GSDStorage."""
 
 
 import file_tools
 
 
@@ skipping 25 matching lines @@
     else:
       return None
 
   def ItemCount(self):
     """Return a count of how many total unique keys have been written."""
     return len(self._store)
 
   def WriteCount(self):
     """Return a count of how many total writes have been done."""
     return self._write_count