PR: 2685

Submitted by: Arpadffy Zoltan <Zoltan.Arpadffy@scientificgames.se>

OpenVMS fixes.

(While the 1.0.0f CHANGES entry on VOS PRNG seeding was missing
in the 1.0.1 branch, the actual code is here already.)

Submitted by: Brian Carlstrom

Submitted by: steve

Update maximum message size for certifiate verify messages to support
4096 bit RSA keys again as TLS v1.2 messages is two bytes longer.

Reviewed by: steve

Send fatal alert if heartbeat extension has an illegal value.

Reviewed by: steve

Fix for DTLS plaintext recovery attack discovered by Nadhem Alfardan and
Kenny Paterson.

Reviewed by: steve

Fix memory leaks.

Submitted by: Robin Seggelmann <seggelmann@fh-muenster.de>
Reviewed by: steve

Support for TLS/DTLS heartbeats.

Submitted by: Peter Sylvester <peter.sylvester@edelweb.fr>
Reviewed by: steve

- remove some unncessary SSL_err and permit
an srp user callback to allow a worker to obtain
a user verifier.

- cleanup and comments in s_server and demonstration
for asynchronous srp user lookup

Submitted by: Tianjie Mao <tjmao@tjmao.net>
Reviewed by: steve

Fix incorrect comma expressions and goto f_err as alert has been set.

Submitted by: Robin Seggelmann <seggelmann@fh-muenster.de>
Reviewed by: steve

Add SCTP support for DTLS (RFC 6083).