Message 69790 - Python tracker

Amaury's patch is applied in r65016 to trunk, all tests pass 

This needs to be merged forward, and then Lib/multiprocessing/managers.py in py3k has to have:

      for view_type in view_types:
         copy_reg.pickle(view_type, rebuild_as_list)

changed to:

      for view_type in view_types:
         ForkingPickler.register(view_type, rebuild_as_list)