Blocked revisions 75028 via svnmerge

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  r75028 | mark.dickinson | 2009-09-22 22:47:24 +0100 (Tue, 22 Sep 2009) | 4 lines

  Issue #1766304:  Optimize membership testing for ranges:  'n in range(...)'
  does an O(1) check, if n is an integer.  Non-integers aren't affected.
  Thanks Robert Lehmann.
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