Add notes in CHANGES and NEWS

     exchange. The LOW ciphers currently doesn't have any ciphers in it.

     [Kurt Roeckx]

  *) Make EVP_MD_CTX, EVP_MD and HMAC_CTX opaque.  For HMAC_CTX, the

     following constructors and destructors were added:

  *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX

     opaque.  For HMAC_CTX, the following constructors and destructors

     were added:

        HMAC_CTX *HMAC_CTX_new(void);

        void HMAC_CTX_free(HMAC_CTX *ctx);

     For EVP_MD, a complete API to create, fill and destroy such

     methods has been added.  See EVP_MD_meth_new(3) for

     documentation.

     For EVP_MD and EVP_CIPHR, complete APIs to create, fill and

     destroy such methods has been added.  See EVP_MD_meth_new(3) and

     EVP_CIPHER_meth_new(3) for documentation.

     Additional changes:

     1) HMAC_CTX_cleanup() and EVP_MD_CTX_cleanup() were removed,

        HMAC_CTX_init() and EVP_MD_CTX_init() should be called instead

        to reinitialise and already created structure.  Also,

        HMAC_CTX_init() and EVP_MD_CTX_init() now return 0 for failure

        and 1 for success (they previously had the return type void).

     1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and

        HMAC_CTX_cleanup() were removed.  HMAC_CTX_reset() and

        EVP_MD_CTX_reset() should be called instead to reinitialise

        an already created structure.

     2) For consistency with the majority of our object creators and

        destructors, EVP_MD_CTX_(create|destroy) were renamed to

        EVP_MD_CTX_(new|free).  The old names are retained as macros

      o CCM ciphersuites

      o Reworked test suite, now based on perl, Test::Harness and Test::More

      o Varous libcrypto structures made opaque including: BIGNUM, EVP_MD,

        EVP_MD_CTX and HMAC_CTX.

        EVP_MD_CTX, HMAC_CTX, EVP_CIPHER and EVP_CIPHER_CTX.

      o libssl internal structures made opaque

      o SSLv2 support removed

      o Kerberos ciphersuite support removed