zodbpickle: Fork of Python 3 pickle module.

This package presents a uniform pickling interface for ZODB:

- Under Python2, this package forks both Python 2.7's ``pickle`` and
  ``cPickle`` modules, adding support for the ``protocol 3`` opcodes.
  It also provides a new subclass of ``bytes``, ``zodbpickle.binary``,
  which Python2 applications can use to pickle binary values such that
  they will be unpickled as ``bytes`` under Py3k.

- Under Py3k, this package forks the ``pickle`` module (and the
  supporting C extension) from both Python 3.2 and Python 3.3.
  The fork add support for the ``noload`` operations used by ZODB.