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.
boost-1_37_0-1_fc10:HEAD:boost-1.37.0-1.fc10.src.rpm:1229535558 boost-1_39_0-1_fc10:HEAD:boost-1.39.0-1.fc10.src.rpm:1241744899