versions.

compatibility with PEP3118.

calls (which don't exist on non-Unix platforms).

Thanks to Trent Nelson for the report and patch.

before timing out.  This doesn't change the duration of the test under
normal circumstances.  This is targetted at fixing the spurious failures
on the FreeBSD buildbot primarily.

should prevent a failure in tearDown masking any real test failure.

Patch from Trent Nelson.  (I can't test this.)

Patch from Trent Nelson.  Also simplified removing a file by using test_support.

would give bogus error messages, because of untested exceptions::

    >>> f(**g(1=2))
    XXX undetected error
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    TypeError: 'int' object is not iterable

instead of the expected SyntaxError: keyword can't be an expression

Will backport.

The bundled libffi copy is now in sync with the recently released
libffi3.0.4 version, apart from some small changes to
Modules/_ctypes/libffi/configure.ac.

I gave up on using libffi3 files on os x.
Instead, static configuration with files from pyobjc is used.

As reported by Trent Nelson on python-dev.

Since abc._Abstract was replaces by a new type flags the regression test suite fails. I've added a new function inspect.isabstract(). Is the mmethod fine or should I check if object is a instance of type or subclass of object, too?