[Checkins] [zopefoundation/persistent] e16512: Python3: Stop using undocumented PyLong_AS_LONG.

[Jason Madden]

  Branch: refs/heads/issue125
  Home:   https://github.com/zopefoundation/persistent
  Commit: e1651241793ea6ec24cfab4fa0b79853e5a3a374
      https://github.com/zopefoundation/persistent/commit/e1651241793ea6ec24cfab4fa0b79853e5a3a374
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2020-02-20 (Thu, 20 Feb 2020)

  Changed paths:
    M persistent/_compat.h

  Log Message:
  -----------
  Python3: Stop using undocumented PyLong_AS_LONG.

Fixes #125

Because it was just an alias for the documented API, there should be no repercussions. The exception (and the reason for this issue in the first place) is if something both includes 'cPersistence.h' and also defines their own INT_AS_LONG macro. If the definitions differ, the compiler might now emit a warning. I saw that in BTrees https://github.com/zopefoundation/BTrees/pull/122/files#diff-277c29c35c8feb60719e5ec94a3fe72e