the infrastructure.

to record an undo transaction for an object.  This will remember the
previous revids for the undone objects, which is necessary because a
transaction may undo several revisions of an object.

get_prevrevid(): Given an oid, get the recorded previous revid for the
object.

is undone, the application can note the fact in the undoing
transaction. This is extremely desireable when doing transactional
undo, so that you can keep track of what the undoing transactions
actually (un)did.

was used to start the process. This allows zdaemon-controlled
processes to take advantage of optimization.

a Python reserved word.

in the documentation

given for the trunk

StorageAPI, BasicStorageAPI, FullStorageAPI, MinimalStorageAPI classes removed.

MinimalTest greatly simplified.

suite(): use unittest.makeSuite()

BaseFramework, MinimalBaseFrameWork, FullBaseFramework classes
removed.

MinimalDBHomeTest => MinimalCreateTest, and mixin inheritance

FullDBHomeTest => FullCreateTest, and mixin inheritance

suite(): use unittest.makeSuite()

dne => DNE

repeating the substitution.

Why didn't we think of this before?!

some of the security methods.

1. Some browsers don't understand attribute values in single quotes,
   so always use double quotes.

2. An undefined variable was referenced in the error reporting code in
   parseSubstitution().  (The error reporting cannot be reached unless
   _subst_re is changed -- but it is still a bug. :-)