Ks libxo ls

I branched ks_libxo_ls from splbio/ap_libxo_master.  After I had made the first 2 commits, I noticed a number of updates to splbio/ap_libxo_master.  So,I rebased ks_libxo_ls on splbio/ap_libxo_master and then added the tests to the makefile.