[issue18236] str.isspace should use the Unicode White_Space property

[Alexander Belopolsky]

Changes by Alexander Belopolsky <alexander.belopolsky at gmail.com>:


Added file: http://bugs.python.org/file30679/3ed5bb7fcee9.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18236>
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