test_kqueue fails on both NetBSD and OpenBSD:
http://buildbot.python.org/all/builders/AMD64 NetBSD 5.1.2 [SB] 2.7/builds/206/steps/test/logs/stdio
http://buildbot.python.org/all/builders/x86 OpenBSD 5.1 [SB] 2.7/builds/153/steps/test/logs/stdio

"""
======================================================================
FAIL: test_queue_event (test.test_kqueue.TestKQueue)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/cpython/buildslave/2.7.snakebite-netbsd51-amd64-1/build/Lib/test/test_kqueue.py", line 129, in test_queue_event
    (server.fileno(), select.KQ_FILTER_WRITE, flags)])
AssertionError: Lists differ: [(10L, 1, 5L), (11L, 1, 5L)] != [(10, 1, 0), (11, 1, 0)]

First differing element 0:
(10L, 1, 5L)
(10, 1, 0)

- [(10L, 1, 5L), (11L, 1, 5L)]
?     -     ^^      -     ^^

+ [(10, 1, 0), (11, 1, 0)]
?          ^     
"""

The test assumes that the input flags (EV_ADD, EV_ENABLE...) will be returned in the output events. It's apparently not the case on OpenBSD and NetBSD (and probably on OS-X neither, because this check is disabled on this platform), and I can't see anything in the kqueue man pages hinting to this behavior (only specific flags will be set on output, like EV_ERROR). Knowing which flag was specified is not really useful actually.

The patch attached just removes this check (we keep checking the file descriptors and filter, of course).

Could we merge this with #6419?