patch for speed

[Torbjörn Granlund]

paul zimmermann <Paul.Zimmermann at inria.fr> writes:

  the benefit for the user is to be able to measure the speed of mpz_legendre.
  Since the documentation does not say that mpz_legendre is an alias for
  mpz_jacobi, I believe it is legitimate.

How many "users" will want to use tune/speed and at the same time not be
able to figure out that we alias mpz_legendre to mpz_jacobi?  That alias
might not be documented, but tune/speed is "more undocumented".

-- 
Torbjörn
Please encrypt, key id 0xC8601622