DB_AM_SWAP
F_SET(dbp, DB_AM_SWAP);
dbp->byteswapped = F_ISSET(dbp, DB_AM_SWAP) ? 1 : 0;
F_CLR(dbp, DB_AM_SWAP);
F_SET(dbp, DB_AM_SWAP);
ftype = F_ISSET(dbp, DB_AM_SWAP) ? DB_FTYPE_BTREE : 0;
pginfo.needswap = F_ISSET(dbp, DB_AM_SWAP);
{ DB_AM_SWAP, "needswap" },