when using affinity and looking at a locally cooked trove, findTroves will  return an empty list for that troveSpec.  Handle that case.
when using affinity and looking at a locally cooked trove, findTroves will 
return an empty list for that troveSpec.  Handle that case.


sassoftware/conary,sassoftware/conary,sassoftware/conary,sassoftware/conary,sassoftware/conary