reasons

OFS Image: Image and File updated to use isinstance(data, str) and raises TypeError upon encountering unicode objects.

OFS Image: Image and File now both support simple unicode objects for data (they function the same as strings for data).

- View and attribute lookup order was changed to the following:
    1. Unacquired attributes
    2. Views
    3. Acquired attributes
  According to consensus in z3-five mailing list:
  http://codespeak.net/pipermail/z3-five/2006q2/001474.html

- The defaultView directive now only looks up views, not 
  attributes.

Fixed edge case of attribute name ''.

Fixes http://www.zope.org/Collectors/Zope/2109

        in ZServer/HTTPServer

      - Collector #2116: sequence.sort() did not work properly
        locale related comparison methods

http://www.zope.org/Collectors/Zope/2118

 Log message for revision 68451:
  Allow access to ZopeIterator/PathIterator API from restricted Python
  (e.g. python expressions)