Merged revisions 74804 via svnmerge from

Merged revisions 74804 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r74804 | ronald.oussoren | 2009-09-15 21:07:58 +0200 (Tue, 15 Sep 2009) | 15 lines

  Merged revisions 74798 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r74798 | ronald.oussoren | 2009-09-15 20:33:33 +0200 (Tue, 15 Sep 2009) | 8 lines

    MacOSX: detect the architectures supported by
    Tk.framework and build _tkinter only for those
    architectures.

    This replaces the hardcoded solution that is no
    longer valid now that 64-bit capable versions of
    Tk are available on OSX.
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