[Checkins] [zopefoundation/zope.interface] d27439: Several small tweaks to GC and deletion handling.

[Jason Madden]

  Branch: refs/heads/faster-eq-hash-comparison
  Home:   https://github.com/zopefoundation/zope.interface
  Commit: d27439c7e3c33c10eec2f3dab5109d8626e18d2e
      https://github.com/zopefoundation/zope.interface/commit/d27439c7e3c33c10eec2f3dab5109d8626e18d2e
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-03-11 (Wed, 11 Mar 2020)

  Changed paths:
    M src/zope/interface/_zope_interface_coptimizations.c

  Log Message:
  -----------
  Several small tweaks to GC and deletion handling.

Several places needed to, essentially, call super.