* cipher/dilithium-common.c (poly_uniform): Add stream128_close.
(poly_uniform_eta_2, poly_uniform_eta_4): Add stream256_close.
(poly_uniform_gamma1_17, poly_uniform_gamma1_19): Likewise.
* cipher/dilithium-dep.c (poly_challenge): Add shake256_close.
(crypto_sign_signature_internal): Likewise.
(crypto_sign_verify_internal): Likewise.
* cipher/dilithium.c [_GCRYPT_IN_LIBGCRYPT]: Add glue code
for shake128_* and shake256_*.