[rql2sql/test] Set maxDiff to None to see full diffs this is usually useful to compare SQL strings

[rql2sql] Use string_type instead of unicode for py3k support

[gcdebug] Only ignore weakref.WeakKeyDictionary class on Python 2 From Python 3.5, this class fails isinstance check with the following error: :: cls = <class 'weakref.WeakKeyDictionary'>, instance = <functools._lru_list_elem object at 0x7f4331859a48> def __instancecheck__(cls, instance): """Override for isinstance(instance, cls).""" # Inline the cache checking > subclass = instance.__class__ E AssertionError: [<class 'AttributeError'> in gc] 'functools._lru_list_elem' object has no attribute '__class__' /usr/lib/python3.5/abc.py:181: AssertionError I have no clue why this happens, but it makes cubicweb.web.test.test_views.AutomaticWebTest.test_startup_views fail on Python 3.5. So only consider this class for Python 2.

[wsgi] Convert "code" passed to WSGIResponse as integer WSGIResponse is passed a Request.status_out in CubicWebWSGIApplication._render(), which, starting from Python 3.5, is an instance of HTTPStatus. However, webtest still expects a 3-digits value as status string. Fortunately, calling int() on an HTTPStatus works.