Blocked revisions 69837-69838 via svnmerge

Blocked revisions 69837-69838 via svnmerge

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  r69837 | raymond.hettinger | 2009-02-21 01:17:22 -0600 (Sat, 21 Feb 2009) | 4 lines

  Fix keyword arguments for itertools.count().
  Step arg without a start arg was ignored.
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  r69838 | raymond.hettinger | 2009-02-21 02:58:42 -0600 (Sat, 21 Feb 2009) | 1 line

  Speedup and simplify negative counter using count's new step argument.
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