Merged revisions 74446-74449 via svnmerge from

Merged revisions 74446-74449 via svnmerge from
svn+ssh://pythondev/python/trunk

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  r74446 | guilherme.polo | 2009-08-14 10:53:41 -0300 (Fri, 14 Aug 2009) | 1 line

  Issue #3344: Replace itertools.count by enumerate.
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  r74447 | guilherme.polo | 2009-08-14 11:03:07 -0300 (Fri, 14 Aug 2009) | 1 line

  Issue #3926: Fix the usage of the new showwarnings and formatwarning.
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  r74448 | guilherme.polo | 2009-08-14 11:36:45 -0300 (Fri, 14 Aug 2009) | 3 lines

  Issue #1135: Add the XView and YView mix-ins to avoid duplicating
  the xview* and yview* methods.
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  r74449 | guilherme.polo | 2009-08-14 11:43:43 -0300 (Fri, 14 Aug 2009) | 1 line

  Clarifying Entry.selection_present's docstring.
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