New mpz prp functions...

[Zimmermann Paul]

> We should ask to programmers using GMP if they need some new functions.
> I'm sure that projects like ECM-GMP [ http://ecm.gforge.inria.fr/ ] or
> PARI/GP [ http://pari.math.u-bordeaux.fr/ ] are implementing their own
> (pseudo) primality testing algorithms. Do they need to have part of them
> reimplemented in GMP? You may ask.

for GMP-ECM (not ECM-GMP) we rely on GMP's pseudo-primality function
(mpz_probab_prime_p), which is sufficient for our needs.

Paul Zimmermann