checkin.

really not reusable, so should be considered an implementation
detail.

- Define exceptions in the "Exceptions" module.
- Expose all the exceptions in the ZConfig package directly.

the end of the \modulesynopsis blurbs.

only used once within the ZConfig package.

exception specific to ZConfig is a specialization of
ConfigurationError.

by '$' or a name, raise an exception.  (Previously this used '' for
the replacement text.)

refactoring.

useful now that %define and substitution is built into the basic handling
of the configuration files.

Further documentation is needed.

Log message on platforms where file-locking isn't supported.

adding Dumper class to ZODB4.

Use 0/1 instead of True/False, since none of the other code uses
True/False.

There are few differences between the two files, except for necessary
differences because of API changes.  This change involves backporting
the new UndoError style from ZODB4.

- Update signature for the Context.parse() method
- Fix some broken markup

And whitespace normalization.

rotate_logs(), which has the same effect but is more Zope 2.5
friendly.

Remove now redundant zLOG import from main().

Darn.  Why didn't the test suite catch this?