Issue #12469: test_signal checks wakeup signals order, except on freebsd6
Issue #12469: test_signal checks wakeup signals order, except on freebsd6

On FreeBSD 6, when signals are unblocked, FreeBSD 6 delivers signals in the
reverse order of their number.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator