[Checkins] [zopefoundation/BTrees] 7b064f: The value of using64bits was broken in OIBTree wit...

[Jason Madden]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/BTrees
  Commit: 7b064fc4f4aa1848960a66595d0ddd780fefda7c
      https://github.com/zopefoundation/BTrees/commit/7b064fc4f4aa1848960a66595d0ddd780fefda7c
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-03-05 (Thu, 05 Mar 2020)

  Changed paths:
    M BTrees/OIBTree.py
    M BTrees/tests/test_IFBTree.py
    M BTrees/tests/test_IIBTree.py
    M BTrees/tests/test_IOBTree.py
    M BTrees/tests/test_OIBTree.py
    M CHANGES.rst

  Log Message:
  -----------
  The value of using64bits was broken in OIBTree with pure python.

Fix it.

Also it's possible to statically know the expected value of using64bits for all included tree modules, so we don't need the (unexecuted) branch that creates (unused) test code in the *I* test modules.