Merged revisions 80185 via svnmerge from

Merged revisions 80185 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r80185 | ronald.oussoren | 2010-04-18 17:24:17 +0200 (Sun, 18 Apr 2010) | 12 lines

  Merged revisions 80179 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

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    r80179 | ronald.oussoren | 2010-04-18 16:01:05 +0200 (Sun, 18 Apr 2010) | 5 lines

    Add check to build-installer.py to ensure that
    the right version of Tcl/Tk is available (on OSX)

    Fixes issue #5651
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