Fix problem occuring when used from OpenSSH on Solaris 8.

 Changes between 0.9.6b and 0.9.6c  [XX xxx XXXX]

  *) Initialize static variable in crypto/dsa/dsa_lib.c explicitely to

     NULL, as at least on Solaris 8 this seems not to be done automatically

     (in contradiction to the requirements of the C standard).

     This made problems when used from OpenSSH.

     [Lutz Jaenicke]

  *) In crypto/dh/dh_key.c, change generate_key() (the default

     implementation of DH_generate_key()) so that a new key is

     generated each time DH_generate_key() is used on a DH object.

const char *DSA_version="DSA" OPENSSL_VERSION_PTEXT;

static DSA_METHOD *default_DSA_method;

static DSA_METHOD *default_DSA_method = NULL;

static int dsa_meth_num = 0;

static STACK_OF(CRYPTO_EX_DATA_FUNCS) *dsa_meth = NULL;