Merged revisions 85731,85735 via svnmerge from

Merged revisions 85731,85735 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r85731 | georg.brandl | 2010-10-19 23:07:16 +0200 (Di, 19 Okt 2010) | 1 line

  Be consistent in the spelling of thread-safe(ty).
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  r85735 | georg.brandl | 2010-10-20 08:50:19 +0200 (Mi, 20 Okt 2010) | 1 line

  Fix r85728: use "" to mean the system default locale, which should work on more systems.
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