collect_key
key->size = collect_key(hashp, key_pagep, 0, &last_page);
key->size = collect_key(hashp, key_pagep, 0, NULL);
retval = collect_key(hashp, next_pagep, totlen, last_page);
static int32_t collect_key __P((HTAB *, PAGE16 *, int32_t, db_pgno_t *));
key->size = (size_t)collect_key(hashp, bufp, 0, val, set);
collect_key(hashp, xbp, totlen, val, set)) < 1))
static int collect_key(HTAB *, BUFHEAD *, int, DBT *, int);