OpenSSL/MIT acknowledgements

The file docs/index.html contains

Acknowledgements

  OpenSSL

   This product includes software developed by the OpenSSL Project for
   use in the OpenSSL Toolkit ([17]http://www.openssl.org/).

  MIT Kerberos

   This product includes Kerberos software developed by the Massachusetts
   Institute of Technology ([18]http://web.mit.edu/kerberos/):

I don't see any of these products or portions thereof actually included
anywhere, so I'm wondering what this refers to.

--
Peter Eisentraut
http://developer.postgresql.org/~petere/