make_ixfr_name_temp
make_ixfr_name_temp(ixfrfile, sizeof(ixfrfile), zfile, file_num, temp);
make_ixfr_name_temp(ixfrfile, sizeof(ixfrfile), zfile, file_num, temp);
make_ixfr_name_temp(ixfrfile_old, sizeof(ixfrfile_old), zfile, oldnum,
make_ixfr_name_temp(ixfrfile_new, sizeof(ixfrfile_new), zfile, newnum,