-def temp_cwd(name='tempcwd', quiet=False, path=None):
+def temp_cwd(name='tempcwd', quiet=False):

Since this parameter removal was pushed, the Windows buildbots  consistently have this new error in this Windows-only test.

ERROR: test_empty (test.test_startfile.TestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\buildbot.python.org\3.3.kloth-win64\build\lib\test\test_startfile.py", line 26, in test_empty
    with support.temp_cwd(path=path.dirname(sys.executable)):

  File "C:\buildbot.python.org\3.3.kloth-win64\build\lib\contextlib.py", line 115, in helper
    return _GeneratorContextManager(func, *args, **kwds)
  File "C:\buildbot.python.org\3.3.kloth-win64\build\lib\contextlib.py", line 37, in __init__
    self.gen = func(*args, **kwds)
TypeError: temp_cwd() got an unexpected keyword argument 'path'