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

src/trusted/validator_arm/dgen_opt.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.
 #
 
 """
 Table minimization algorithm.
 """
 
@@ skipping 51 matching lines @@
       if not simp_patterns:
         # Stick in true, so row is always non-empty
         simp_patterns.append(dgen_core.BitPattern(0, 0, '=='))
       r.patterns = simp_patterns
 
 def each_index_pair(sequence):
     """Utility function: Generates each unique index pair in sequence."""
     for i in range(0, len(sequence)):
         for j in range(i + 1, len(sequence)):
             yield (i, j)