signature algorithms extension and correct signature format for
server key exchange.

All ciphersuites should now work on the server but no client support and
no client certificate support yet.

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

Don't change state when answering DTLS ClientHello.

Submitted By: Robin Seggelmann <seggelmann@fh-muenster.de>

Support for abbreviated handshakes when renegotiating.

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

Make session tickets work with DTLS.

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

Typo in PR#1949 bug, oops!

Submitted by: steve@openssl.org

More robust fix and workaround for PR#1949. Don't try to work out if there
is any write pending data as this can be unreliable: always flush.

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

Better fix for PR#2144

Submitted by: steve@openssl.org

Fix DTLS connection so new_session is reset if we read second client hello:
new_session is used to detect renegotiation.

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

Add extension support to DTLS code mainly using existing implementation for
TLS.

Submitted by: Robin Seggelmann <seggelmann@fh-muenster.de>
Approved by: steve@openssl.org

Add Renegotiation extension to DTLS, fix DTLS ClientHello processing bug.

Submitted by: Robin Seggelmann <seggelmann@fh-muenster.de>
Approved by: steve@openssl.org

DTLS listen support.

Submitted by: Robin Seggelmann <seggelmann@fh-muenster.de>
Approved by: steve@openssl.org

Fix DTLS cookie management bugs.

Submitted by: Nagendra Modadugu

OPENSSL_NO_DEPRECATED, etc. Steve, please double-check the CMS stuff...

Submitted by: Alex Lam

Submitted by: Victor B. Wagner <vitus@cryptocom.ru>

ciphersuite selection code in HEAD

Submitted by: Victor Duchovni

This change resolves a number of problems and obviates multiple kludges.
A new feature is that you can now say "AES256" or "AES128" (not just
"AES", which enables both).

In some cases the ciphersuite list generated from a given string is
affected by this change.  I hope this is just in those cases where the
previous behaviour did not make sense.

pointer and make the SSL_METHOD parameter in SSL_CTX_new,
SSL_CTX_set_ssl_version and SSL_set_ssl_method const.

for locking code. The CRYPTO_LOCK_SSL_METHOD lock is now no longer used.

    	./configure no-deprecated [no-dsa] [no-dh] [no-ec] [no-rsa]
    	make depend all test
work again

PR: 1159

handshake_write_seq is an unsigned short, so treat it like one

move some functions from exported header <openssl/dtl1.h> into "ssl_locl.h";
fix silly indentation (a TAB is *not* always 4 spaces)