Update to 1.997
    
    - New upstream release 1.997
      - Fix initialization and creation of OpenSSL-internals for perlcc
        compatibility (CPAN RT#95452)
      - Add refresh option for peer_certificate, so that it checks if the
        certificate changed in the mean time (on renegotiation)
      - Fix fingerprint checking - now applies only to top-most certificate
      - IO::Socket::SSL::Utils - accept extensions within CERT_create
      - Various documentation fixes