prefilters only worked as side affects (which is enough for populating the cache); fix the input sets for prefilter results
prefilters only worked as side affects (which is enough for populating the
cache); fix the input sets for prefilter results

fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary