Changes:
* IPv6 support (configure with --enable-ipv6, by Matthias Wimmer)
* support for Service Discovery (JEP-0030, mod_disco, by Lukasz Karwacki)
* supporting GNU Pth 1.4.0, 1.4.1, 2.0
* support for encrypted/hashed password storage
(mod_auth_crypt, by Fabien Ninoles, enhanced by Matthias Wimmer)
* mod_auth_digest may now be used without mod_auth_plain
* pthsock_client c2s heartbeat support (by Nathan Sharp)
* pthsock_client will now listen on port 5222/5223 only if actually
configured to
* mod_version can now hide the OS version (by Matthias Wimmer)
* fixed a possible DoS attack with SSL in pthsock_client (by Nathan Sharp)
* better error messages
* several minor fixes
* Cygwin build fixes (by Frank Seesink)
697498d727