These two fields allow to specify a different default assignee for ticket opened against this package in bugzilla. Note: The EPEL field is always displayed for packages in the 'rpms' namespace regardless of whether it is used in bugzilla or not.
rabbitmq-server-1_5_5-2_fc10:EL-5:rabbitmq-server-1.5.5-2.fc10.src.rpm:1243354943