Don't call internal functions directly call them through
SSL_test_functions(). This also makes unit testing work on
Windows and platforms that don't export internal functions
from shared libraries.

By default unit testing is not enabled: it requires the compile
time option "enable-unit-test".
Reviewed-by: Geoff Thorpe <geoff@openssl.org>
(cherry picked from commit e0fc7961)

Conflicts:

	ssl/Makefile
	util/mkdef.pl

PR#2569

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit cba11f57)

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 62352b81)

statement of opinion rather than a fact.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit c8d133e4)

PR#1675
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 197400c3f0d617d71ad8167b52fb73046d334320)

PR#3456
Reviewed-by: Stephen Henson <steve@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit d48e78f0)

PR#3442

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 2097a17c)

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 3bd54819)

PR#3452
(cherry picked from commit ca2015a6)

Use same logic when determining when to expect a client
certificate for both TLS and DTLS.

PR#3452
(cherry picked from commit c8d710dc)

The options which emulate a web server don't make sense when doing DTLS.
Exit with an error if an attempt is made to use them.

PR#3453
(cherry picked from commit 58a2aaeade8bdecd0f9f0df41927f7cff3012547)

PR#3449

PR#3445
(cherry picked from commit 1c3e9a7c)

Add description of the option to advertise support of
Next Protocol Negotiation extension (-nextprotoneg) to
man pages of s_client and s_server.

PR#3444
(cherry picked from commit 7efd0e77)

Conflicts:

	doc/apps/s_server.pod

(cherry picked from commit 7aabd9c92fe6f0ea2a82869e5171dcc4518cee85)

This is actually ok for this function, but initialised to zero anyway if
PURIFY defined.

This does have the impact of masking any *real* unitialised data reads in bn though.

Patch based on approach suggested by Rich Salz.

PR#3415

(cherry picked from commit 77747e2d9a5573b1dbc15e247ce18c03374c760c)

PR#3440
(cherry picked from commit 924e5eda)

  Detected by dcruette@qualitesys.com

(cherry picked from commit 8b5dd340)

(cherry picked from commit c1d1b011)

Based on an original patch by Neitrino Photonov <neitrinoph@gmail.com>

PR#3439

(cherry picked from commit 66816c53)

PR#2985
(cherry picked from commit 9d23f422)

(cherry picked from commit ee724df7)

(cherry picked from commit cba3f1c7)

Conflicts:

	doc/apps/s_client.pod
	doc/apps/s_server.pod

(cherry picked from commit a44f219c)

(cherry picked from commit a23a6e85)

PR#2277
(cherry picked from commit 733a6c882e92f8221bd03a51643bb47f5f81bb81)

(cherry picked from commit 07255f0a76d9d349d915e14f969b9ff2ee0d1953)

PR#3418.
(cherry picked from commit fdea4fff)

PR#319 (reoponed version).
(cherry picked from commit 7f6e9578)

(cherry picked from commit 2cfbec1c)
(cherry picked from commit a9661e45)

(cherry picked from commit 55707a36)

(cherry picked from commit f1112985)

PR: #3397
(cherry picked from commit eca441b2)

ERR_get_error(3) references the non-existent
ERR_get_last_error_line_data instead of the one that does exist,
ERR_peek_last_error_line_data.

PR#3283
(cherry picked from commit 5cc99c6c)

(cherry picked from commit 7cb472bd)

Gets rid of this;

defined(@array) is deprecated at ../util/mkerr.pl line 792.
        (Maybe you should just omit the defined()?)
defined(@array) is deprecated at ../util/mkerr.pl line 800.
        (Maybe you should just omit the defined()?)

Signed-off-by: Geoff Thorpe <geoff@openssl.org>
(cherry picked from commit 647f360e)

Primitive encodings shouldn't use indefinite length constructed
form.

PR#2438 (partial).
(cherry picked from commit 398e99fe)