[Checkins] [zopefoundation/Zope] afab8f: Use a released AccessControl 4.1 version. (#694)

[Michael Howitz]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: afab8fad9a6cac228d74e317b8b93a1d299ca2df
      https://github.com/zopefoundation/Zope/commit/afab8fad9a6cac228d74e317b8b93a1d299ca2df
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-09-02 (Mon, 02 Sep 2019)

  Changed paths:
    M buildout.cfg
    M constraints.txt
    M requirements-full.txt
    M versions-prod.cfg

  Log Message:
  -----------
  Use a released AccessControl 4.1 version. (#694)