Django rev 5752 introduced a change to the way the test runner is called (see http://code.djangoproject.com/wiki/BackwardsIncompatibleChanges#Addedinteractiveargumenttorun_tests). This is a small patch to make the reviewboard test runner work again.

Another django change (rev 5769) made more changes to the test framework, but they don't appear to affect reviewboard (since it uses nose to actually run the tests).

Ran ./manage test, successfully executed the test suite.