[cadofct.pm] use the same -skip value in merge and replay
[cadofct.pm] use the same -skip value in merge and replay

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