added comments and removed useMST stuff, since MST is better and not slower
added comments and removed useMST stuff, since MST is better and not slower

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs