Specify websites that should use persistent database connections.
The "name" is expected to be the name of one or more websites,
as configured using the Catalog directive.
This directive is only available for use in the global
(interchange.cfg) configuration file,
and will affect all websites running under the Interchange installation.
It will not work in a website's local (catalog.cfg)
This directive allows you to specify websites that should use a
persistent database connection.
When a connection is persistent,
it will be opened and then cached for later use,
rather than being opened and closed with every request.