Merged revisions 80875 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

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  r80875 | giampaolo.rodola | 2010-05-06 19:57:06 +0200 (gio, 06 mag 2010) | 1 line

  Fix asyncore issues 8573 and 8483: _strerror might throw ValueError; asyncore.__getattr__ cheap inheritance caused confusing error messages when accessing undefined class attributes; added an alias for __str__ which now is used as a fallback for __repr__
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