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

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

Index: test/mac/gyptest-postbuild-static-library.gyp
===================================================================
--- test/mac/gyptest-postbuild-static-library.gyp	(revision 1707)
+++ test/mac/gyptest-postbuild-static-library.gyp	(working copy)
@@ -1,28 +0,0 @@
-#!/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()