Added the ability to browse, compare, and revert to historical revisions for DTML methods and documents

breaking xml-rpc apps that may depend on them. Waaa.

refuses to store wrapped objects, which makes the app-level checks no
longer necessary.

to the old manage_renameObject if the user just hit the enter
key in the browser on a single item rename.

naming problems that broke simple_send, so I fixed those and made the
smtp_host and smtp_port names uniform in the file.

with standard Python semantics by using the new PERSISTENCE_FLAGS
class flags macro.

with standard Python semantics by using the new PERSISTENCE_FLAGS
class flags macro.

Python __get/set/delattr__ semantics for subclasses.

is already running.

cannot create" rule.  We define a __creatable_by_super__ method that
returns a true so that user folders (BasicUserFolder) could make
themselves addable by super for bootstrapping purposes.

An object (typically a class) can define a __creatable_by_super__
method that returns a true object if the object can be created by
the superuser. This was needed so that user folders (BasicUserFolder)
could make themselves addable by super for bootstrapping purposes.

Added a couple patches, fixed superValues

to change. The new security policy machinery makes the root of the
hack unnecessary now.