Daniel Sandler 723c5dc3d6 Fix parallel sync on python < 2.6.
Event.isSet was renamed to is_set in 2.6, but we should
use the earlier syntax to avoid breaking compatibility
with older Python installations.

Change-Id: I41888ed38df278191d7496c1a6eed15e881733f4
2011-04-04 11:34:47 -04:00
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