[Checkins] [zopefoundation/Acquisition] 61bae8: call PyObject_GC_UnTrack() in tp_dealloc()

[GitHub]

  Branch: refs/heads/issue21
  Home:   https://github.com/zopefoundation/Acquisition
  Commit: 61bae8d442569e84bde4edd027c05ab927ed594c
      https://github.com/zopefoundation/Acquisition/commit/61bae8d442569e84bde4edd027c05ab927ed594c
  Author: y-fujisaki2 <chi-kimura at xr.jp.nec.com>
  Date:   2017-09-11 (Mon, 11 Sep 2017)

  Changed paths:
    M CHANGES.rst
    M src/Acquisition/_Acquisition.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