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.
gromacs-4_0-3_fc9:HEAD:gromacs-4.0-3.fc9.src.rpm:1224069849 gromacs-4_0_1-4_fc9:HEAD:gromacs-4.0.1-4.fc9.src.rpm:1226248354