Doug Anderson fc06ced9f9 Make 'repo sync -jN' exit with an error code in the case of sync errors.
The bug that this is fixing is described here:

http://code.google.com/p/chromium-os/issues/detail?id=6813

This fix allows the helper threads to signal the main thread that they
saw an error.  When the main thread sees the error, it will let all
existing threads finish, then exit with an error.

Change-Id: If3019bc6b0b3ab9304d49ed2eea53e9d57f3095a
2011-03-17 09:17:42 -07:00
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