new comment block explains the cause and the cure.

        which is aware of extension classes that fill 'tp_callable'
        but don't define '__call__'.

      - Made KeywordIndex be more robust about receiving a value that
        is not a string or an iterable type.

Add an sdist target to the Makefile which builds a tarball source
distribution.

If the target version is not found, use the first "most acceptable" version found instead of the last.

a setup.py build_ext -i in order to prevent needing to needlessly rebuild
C extensions after a straight 'make' is performed.

Cleaned up makefile and added comments.

Also, moved mkzopeinstance and mkzeoinstance into 'utilities'.  It makes
more sense for 'bin' to be disposable in the face of inplace builds.

Change directories for build-tmp, build-lib, and build-scripts so they don't get copied to the install directory during 'make install'.

Also, change 'make clean' to remove '.so' files and not try to remove core files.

- Added OrderSupport and OrderedFolder.
- Added optional 'id' argument to Folder constructor.
- Modified main.dtml to play well with Folder and OrderedFolder.

contains a version name. If it does, then we check whether the user
globally has permission to join/leave versions. If they don't, we
clear cookie and raise Unauthorized. This will abort any changes that
might have been made during traversal. (If some traversal code makes
changes and commits them, then we still lose and probably deserve to.)

     - Collector #937: UnicodeError exception available within PythonScripts

With current CVS, the test runner reports:
Ran 2135 tests in 569.700s

OK

Add 2.3b1, 2.2.2 as acceptable targets.
Strip trailing '+' from version number in Python.

The Zope security policy now raises Unauthorized for all denied
access.  This is designed to make it easier to diagnose problems in
security settings, since the Unauthorized error will propagate to
something that can display or log the error.

All 2000+ of the Zope unit tests pass with this change, but I suspect
there may be code that expects the security policy to return 0 instead
of raising Unauthorized.  If any severe issues surface, we can revert
this change.

In Python 2.2 and above, getattr operations distinguish
AttributeErrors from other kinds of operations.  But Wrapper_acquire
was masking some errors as AttributeErrors.  Fixed.

Added a comment explaining apply_filter, added curly brackets to
disambiguate nesting in Wrapper_acquire, and re-indented to clarify.

      - Collector #928: DateIndex ignored timezones when indexing and
        querying

  - Indexes and Lexicon now much less likely to generate write conflicts.
    Previously *any* concurrent index/unindex operation would conflict

  - Performance and scalability fix for queries