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?

confusion caused by having the instance and the class have the same
name.