[Checkins] [zopefoundation/zope.traversing] 84bca9: Use alsoProvides(), not directlyProvides(), since ...

[Jason Madden]

  Branch: refs/heads/consistent-iro
  Home:   https://github.com/zopefoundation/zope.traversing
  Commit: 84bca93efac5ffe73f42c5a032e547abed0f826e
      https://github.com/zopefoundation/zope.traversing/commit/84bca93efac5ffe73f42c5a032e547abed0f826e
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-03-30 (Mon, 30 Mar 2020)

  Changed paths:
    M src/zope/traversing/namespace.py

  Log Message:
  -----------
  Use alsoProvides(), not directlyProvides(), since the latter erases all other direct interfaces.

Add to the testcase a scenario for this.