Really remove values from interest table when the holder list is empty.  refs #362
Really remove values from interest table when the holder list is empty.  refs #362

svartika/ccnx,cawka/ndnx,cawka/ndnx,cawka/ndnx,svartika/ccnx,ebollens/ccnmp,svartika/ccnx,svartika/ccnx,ebollens/ccnmp,svartika/ccnx,ebollens/ccnmp,cawka/ndnx,ebollens/ccnmp,cawka/ndnx,svartika/ccnx,svartika/ccnx