[Cython] 0.20 tests fail with python3.4b2

[Julian Taylor]

hi,

with python3.4b2 numpy_memoryview.acquire_release_cycle fails
looking at the source the test should be disabled, but its still run.

This might be a py3.4 change to doctest, but I know nothing about
doctest, so I wanted to check first if you know something about this.
Interestingly py3.4 runs 64 tests, while python3.3 only runs 32.
the __test__ variable contains the same functions in both python
versions (acquire_release is not in it)

======================================================================
FAIL: acquire_release_cycle (numpy_memoryview)
Doctest: numpy_memoryview.acquire_release_cycle
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python3.4/doctest.py", line 2187, in runTest
    raise self.failureException(self.format_failure(new.getvalue()))
AssertionError: Failed doctest test for
numpy_memoryview.acquire_release_cycle
  File
"/tmp/buildd/cython-0.20/build/work-dir/memoryview/c/numpy_memoryview/numpy_memoryview.cpython-34m.so",
line unknown line number, in acquire_release_cycle

----------------------------------------------------------------------
File
"/tmp/buildd/cython-0.20/build/work-dir/memoryview/c/numpy_memoryview/numpy_memoryview.cpython-34m.so",
line ?, in numpy_memoryview.acquire_release_cycle
Failed example:
    acquire_release_cycle(a)
Expected:
    deallocated!
Got nothing