[bwc] load_vector gets the same locks as save_
[bwc] load_vector gets the same locks as save_

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