[issue9978] Better wait for slow machine in test_os (_kill_with_event)

[Hirokazu Yamamoto]

Changes by Hirokazu Yamamoto <ocean-city at m2.ccsnet.ne.jp>:


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title: test_os failures on XP-4 buildbot -> Better wait for slow machine in test_os (_kill_with_event)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9978>
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