Merged revisions 74922 via svnmerge from

Merged revisions 74922 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

................
  r74922 | thomas.heller | 2009-09-18 22:08:39 +0200 (Fr, 18 Sep 2009) | 10 lines

  Merged revisions 74921 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r74921 | thomas.heller | 2009-09-18 22:05:44 +0200 (Fr, 18 Sep 2009) | 3 lines

    Issue #4606: Passing 'None' if ctypes argtype is set to POINTER(...)
    does now always result in NULL.
  ........
................