BTREEINFO
DB *__bt_open(const char *, int, mode_t, const BTREEINFO *, int);
__bt_open(const char *fname, int flags, mode_t mode, const BTREEINFO *openinfo,
BTREEINFO b;
BTREEINFO btopeninfo;
static BTREEINFO bt; /* btree information */
static BTREEINFO bt;
static BTREEINFO ib;
BTREEINFO btreeinfo;
BTREEINFO bti;
BTREEINFO bti;
BTREEINFO bti;
BTREEINFO info;