[Checkins] [zopefoundation/AccessControl] 392feb: Fix str/bytes issue in `_string_hash`.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/AccessControl
  Commit: 392feba6557c97478bcc38b58eeea1a140d7b76e
      https://github.com/zopefoundation/AccessControl/commit/392feba6557c97478bcc38b58eeea1a140d7b76e
  Author: Hanno Schlichting <hanno at hannosch.eu>
  Date:   2017-05-15 (Mon, 15 May 2017)

  Changed paths:
    M src/AccessControl/rolemanager.py

  Log Message:
  -----------
  Fix str/bytes issue in `_string_hash`.