[Checkins] [zopefoundation/Products.ZopeVersionControl] 272853: Adjust Pickler and UnPickler imports to use ZODB._...

[GitHub]

  Branch: refs/heads/py3_imports
  Home:   https://github.com/zopefoundation/Products.ZopeVersionControl
  Commit: 2728538275641dd6ca3593994472a3ffa2938ac6
      https://github.com/zopefoundation/Products.ZopeVersionControl/commit/2728538275641dd6ca3593994472a3ffa2938ac6
  Author: Ruda Porto Filgueiras <rudazz at gmail.com>
  Date:   2017-10-21 (Sat, 21 Oct 2017)

  Changed paths:
    M setup.py
    M src/Products/ZopeVersionControl/Version.py
    M src/Products/ZopeVersionControl/tests/common.py

  Log Message:
  -----------
  Adjust Pickler and UnPickler imports to use ZODB._compat python 2 and 3 compatible versions.
Add conditional import for cStringIO also.