Merged revisions 61892,61900 via svnmerge from

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

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  r61892 | mark.dickinson | 2008-03-25 15:33:23 +0100 (Tue, 25 Mar 2008) | 3 lines

  Issue #2478: Decimal(sqrt(0)) failed when the decimal context
  was not explicitly supplied.
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  r61900 | georg.brandl | 2008-03-25 18:36:43 +0100 (Tue, 25 Mar 2008) | 2 lines

  Add Benjamin.
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