Revision 1044368

better support for immediate priority higher message dispatch for durable subs, tidy up audit and page size config for durables, use destination batch size to page in, remove extranious calls to store getSize(), test for duplicate delivery, audit needs to be large when priority is used and needs to be statically configured, prefetch is a bad model in with priority spread, restrict priority values to 0-9 as impl is restricted to 0-9 jms range