Metacat

use Permission, not Event for isAuthorized() methods

do not delete the access rules when we "archive" the document on "delete" (commented out for now)

allow reading from xml_revision table when we are the doc owner

CNCoreImpl is replaced by CNodeService

implement CNAuthorization

Metacat does not implement CNIdentity - it is a stand-alone service

implement registerSystemMetadata

implement object format methods - using a separate class to do the actual metacat lookup/caching so that teh CN implementation looks cleaner

implement getLogRecords

include latest D1 common/lib changes