Merged revisions 64842,64853,64856,64945 via svnmerge from

Merged revisions 64842,64853,64856,64945 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r64842 | robert.schuppenies | 2008-07-10 15:43:26 +0200 (Thu, 10 Jul 2008) | 2 lines

  Fixed Issue3122 and extended sys.getsizeof tests for built-in types.
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  r64853 | robert.schuppenies | 2008-07-10 17:24:04 +0200 (Thu, 10 Jul 2008) | 3 lines

  Added additional __sizeof__ implementations and addressed comments made in
  Issue3122.
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  r64856 | robert.schuppenies | 2008-07-10 19:13:55 +0200 (Thu, 10 Jul 2008) | 3 lines

  Added garbage collector overhead and optional default return value to
  sys.getsizeof.
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  r64945 | robert.schuppenies | 2008-07-14 10:42:18 +0200 (Mon, 14 Jul 2008) | 2 lines

  Fixed test failure on Win64 machines.
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