replacing the code in cast.c.
(crypto_serpent256_cbc_algorithm): New algorithm, replacing the
code in serpent.c

* src/crypto.c (crypto_serpent256_cbc_algorithm): New algorithm,
replacing code in serpent.c.

* src/crypto.c (crypto_blowfish_cbc_algorithm): New algorithm,
replacing the code in blowfish.c.

* src/crypto.c (crypto_twofish256_cbc_algorithm): New algorithm,
replacing the code in twofish.c.
(make_des3_cbc_instance): Initialize the iv properly.

Rev: src/crypto.c:1.30
Rev: src/crypto.h:1.29