Tests: Rename a gyptest*.gyp file to gyptest*.py.

test/mac/gyptest-postbuild-static-library.py

 #!/usr/bin/env python
 
 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 Verifies that a postbuilds on static libraries work, and that sourceless
 libraries don't cause failures at gyp time.
 """
 
 import TestGyp
 
 import sys
 
 if sys.platform == 'darwin':
   test = TestGyp.TestGyp(formats=['make', 'xcode'])
 
   CHDIR = 'postbuild-static-library'
   test.run_gyp('test.gyp', chdir=CHDIR)
   test.build('test.gyp', 'my_lib', chdir=CHDIR)
   # Building my_sourceless_lib doesn't work with make. gyp should probably
   # forbid sourceless static libraries, since they're pretty pointless.
   # But they shouldn't cause gyp time exceptions.
 
   test.built_file_must_exist('postbuild-file', chdir=CHDIR)
 
   test.pass_test()