doPrep() must be called for each source from fetchAllSources, so move doPrep out into prepSources command
doPrep() must be called for each source from fetchAllSources, so move doPrep out into prepSources command

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