[check_rels.c] compute total # of relations, and added -q option
[check_rels.c] compute total # of relations, and added -q option

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