Merged revisions 78515-78516,78522 via svnmerge from

Merged revisions 78515-78516,78522 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r78515 | georg.brandl | 2010-02-28 20:19:17 +0200 (Sun, 28 Feb 2010) | 1 line

  #8030: make builtin type docstrings more consistent: use "iterable" instead of "seq(uence)", use "new" to show that set() always returns a new object.
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  r78516 | georg.brandl | 2010-02-28 20:26:37 +0200 (Sun, 28 Feb 2010) | 1 line

  The set types can also be called without arguments.
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  r78522 | ezio.melotti | 2010-03-01 01:59:00 +0200 (Mon, 01 Mar 2010) | 1 line

  #8030: more docstring fix for builtin types.
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