all gf2 tests pass with more Galois cleaning in filter/filter_galois.c
all gf2 tests pass with more Galois cleaning in filter/filter_galois.c

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