Log security relevant change.

 Changes between 0.9.6 and 0.9.7  [xx XXX 2000]

  *) Store verify_result within SSL_SESSION also for client side to

     avoid potential security hole. (Re-used sessions on the client side

     always resulted in verify_result==X509_V_OK, not using the original

     result of the server certificate verification.)

     [Lutz Jaenicke]

  *) Make BN_mod_inverse faster by explicitly handling small quotients

     in the Euclid loop. (Speed gain about 20% for small moduli [256 or

     512 bits], about 30% for larger ones [1024 or 2048 bits].)