* it should be a prime. The `hash', `compare' and `destructor' are
* the hash function, the key comparison function and key and context
* destructor function, respectively. The `hash' is mandatory, the others
* it should be a prime. The `hash', `compare' and `destructor' are
* the hash function, the key comparison function and key and context
* destructor function, respectively. The `hash' is mandatory, the others