Spacing.
Added half-gcd to fmpz_mod_poly.
Updated docs on primality testing after recent changes.
Merge remote-tracking branch 'fredrik/trunk' into trunk
Update profiling code for new fmpz_mod_poly_gcd.
Updated URLs to Feitsma and Galway tables and corrected spelling of Feitsma.
Clarified where our BPSW test comes from.
Clarify the provenance of our Lucas test.
Added reference to Chen & Greene paper on Baillie-PSW weakening.
Added fmpz_mod_poly_xgcd_hgcd.
Added fmpz_mod_poly_resultant_euclidean.
Change divrem/rem to only write lenB - 1 coeffs of remainder.
Add fmpz_mod_poly_resultant_hgcd.
Corrected some minor issues with nmod_poly_discriminant and test code and
added fmpz_mod_poly_discriminant.
Added precomputed powers and rem with precomputed powers.
Added powmod_x_fmpz_powers_precomp and powmod_fmpz_binexp_powers_precomp.
Added test code for powers_precomp.
Revert "Added test code for powers_precomp."

This reverts commit 0e9c869f5e5060cb6ff83dd9b1a974a48247cffe.
Added fmpz_is_prime_pocklington.
Correct docs.
Added t-is_prime.