[Checkins] [zopefoundation/Persistence] acd04c: Use newer doctest

[GitHub]

  Branch: refs/heads/zope2-jim-fix-zclasses
  Home:   https://github.com/zopefoundation/Persistence
  Commit: acd04cbfd5602588eda9bd469466701fe13235a1
      https://github.com/zopefoundation/Persistence/commit/acd04cbfd5602588eda9bd469466701fe13235a1
  Author: Jim Fulton <jim at zope.com>
  Date:   2005-04-01 (Fri, 01 Apr 2005)

  Changed paths:
    A tests/test_ExtensionClass.py
    A tests/test_mapping.py

  Log Message:
  -----------
  Use newer doctest