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.
globus-xio-popen-driver-0_2-2_fc9:EL-4:globus-xio-popen-driver-0.2-2.fc9.src.rpm:1240873770