[Checkins] [zopefoundation/AccessControl] 9fb90b: Remove long-deprecated 'Shared' roles support

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/AccessControl
  Commit: 9fb90b7e2608213f3df27fc96e0c5cb6790d6fa3
      https://github.com/zopefoundation/AccessControl/commit/9fb90b7e2608213f3df27fc96e0c5cb6790d6fa3
  Author: Tres Seaver <tseaver at palladion.com>
  Date:   2013-04-24 (Wed, 24 Apr 2013)

  Changed paths:
    M CHANGES.txt
    M src/AccessControl/users.py

  Log Message:
  -----------
  Remove long-deprecated 'Shared' roles support

The feature pre-dates Zope, and was never used by Zope itself.