Recorded merge of revisions 68153 via svnmerge from

Recorded merge of revisions 68153 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r68153 | ronald.oussoren | 2009-01-02 13:59:32 +0100 (Fri, 02 Jan 2009) | 10 lines

  Fix for issue3559: No preferences menu in IDLE on OSX

  1) Add a comment to the help file to that points to the
     preferences menu.

  2) An earlier checkin tried to detect Tk >= 8.10.14,
     but did this in the wrong way. The end result of this
     was that the IDLE->Preferences... menu got surpressed
     when using the system version of Tcl/Tk
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