Restore physical path in __repr__ of Zope objects

[icemac]

When using persistent < 4.4 the __repr__ of Zope objects contained the physical path of the object. Now it contains way more technical information about the OID and the connection. This breaks especially doctests and does not seem to be helpful in 80 % of the use cases where the physical path contains way more information than the OID.

Suggested solution:

• Add a __repr__ method to OFS.SimpleItem to restore the physical path.

References:

• Track down all implications of the __repr__ changes of Zope objects plone/Products.CMFPlone#2547
• How to get back repr of persistent < 4.4? persistent#96

[pbauer]

With #392 I set _p_repr as suggested by @jamadden in plone/Products.CMFPlone#2590 (comment). With this we only need to add PathReprProvider to OFS.SimpleItem.Item. We might even move it to the end of the base-classes and no longer need to inherit from Base.

[icemac]

As #392 was not merged I am going to close this issue here again.