Merged revisions 75011 via svnmerge from

Merged revisions 75011 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r75011 | brett.cannon | 2009-09-21 17:29:48 -0700 (Mon, 21 Sep 2009) | 10 lines

  When range checking was added to time.strftime() a check was placed on tm_isdst
  to make sure it fell within [-1, 1] just in case someone implementing
  strftime() in libc was stupid enough to assume this. Turns out, though, some
  OSs (e.g. zOS) are stupid enough to use values outside of this range for time
  structs created by the system itself. So instead of throwing a ValueError,
  tm_isdst is now normalized before being passed to strftime().

  Fixes issue #6823. Thanks Robert Shapiro for diagnosing the problem and
  contributing an initial patch.
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