Merged revisions 59696-59702 via svnmerge from

Merged revisions 59696-59702 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r59696 | amaury.forgeotdarc | 2008-01-04 03:04:15 +0100 (Fri, 04 Jan 2008) | 11 lines

  Partial port of r59682 from py3k.

  On Windows, when import fails to load a dll module, the message says
  "error code 193" instead of a more informative text.

  It turns out that FormatMessage needs additional parameters for some error codes.
  For example: 193 means "%1 is not a valid Win32 application".
  Since it is impossible to know which parameter to pass, we use
  FORMAT_MESSAGE_IGNORE_INSERTS to get the raw message, which is still better
  than the number.
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  r59698 | andrew.kuchling | 2008-01-04 03:26:00 +0100 (Fri, 04 Jan 2008) | 1 line

  Typo fix
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  r59699 | andrew.kuchling | 2008-01-04 03:31:40 +0100 (Fri, 04 Jan 2008) | 1 line

  Add math items; other edits
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  r59700 | christian.heimes | 2008-01-04 03:46:19 +0100 (Fri, 04 Jan 2008) | 1 line

  Fixed refleak tests for _struct changes
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  r59701 | christian.heimes | 2008-01-04 03:54:42 +0100 (Fri, 04 Jan 2008) | 1 line

  Added _struct._clearcache() for regression tests
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