dependency which should've been declared already.

now as zope.app.component needs it, and we still need that).

re-added include directory (headers can't be reached from distributed eggs), externals are the best solution currently

updated CHANGES for 3.6.2 tag release.

updated CHANGES.

easily be made anyway before 3.7.0 is released.

fix a bug where exceptions thrown during __setitem__ for an ordered container leaves a bad key in the ordering.

there is a full backward compatibility

Previous BTreeContainer used to store their data in _SampleContainer__data.

    setting an existing item does not change the size,
    and the event subscribers should see the new size instead of the old size.
- Reimplemented the BTreeContainer so that it directly accesses the btree
  methods (removed the #TODO)

    - prevent the namechooser from failing on '+', '@' and '/'
    - added tests in the namechooser
    - be sure the name chooser returns unicode