[Checkins] [zopefoundation/zope.security] a11c5e: call PyObject_GC_UnTrack() in tp_dealloc()

[GitHub]

  Branch: refs/heads/issue35
  Home:   https://github.com/zopefoundation/zope.security
  Commit: a11c5e20c2e25a5f7f32f1c11e4d4f47322ff3bb
      https://github.com/zopefoundation/zope.security/commit/a11c5e20c2e25a5f7f32f1c11e4d4f47322ff3bb
  Author: KIMURA Chikahiro <chi-kimura at xr.jp.nec.com>
  Date:   2017-09-11 (Mon, 11 Sep 2017)

  Changed paths:
    M CHANGES.rst
    M src/zope/security/_proxy.c
    M src/zope/security/_zope_security_checker.c

  Log Message:
  -----------
  call PyObject_GC_UnTrack() in tp_dealloc()

see the following sites for details:

* https://bugs.python.org/issue31095
* https://github.com/python/cpython/pull/2974

Fixes #35.