Blocked revisions 64953 via svnmerge

........
  r64953 | benjamin.peterson | 2008-07-14 12:42:17 -0500 (Mon, 14 Jul 2008) | 4 lines

  fix test_py3kwarns

  The fact that this was failing and went unnoticed so long seems like a good argument for being able to enable and disble py3kwarnings through Python.
........