This change adds support for ALPN[1] in OpenSSL. ALPN is the IETF
blessed version of NPN and we'll be supporting both ALPN and NPN for
some time yet.

Cherry-picked from 6f017a8f.

[1] https://tools.ietf.org/html/draft-ietf-tls-applayerprotoneg-00

Avoid occasional up to 8% performance drops.
(cherry picked from commit 7a1a1223)

(cherry picked from commit 72a15870)

This reverts commit 514f1a78.

(cherry picked from commit ce455596)

When verifying a partial path always check to see if the EE certificate
is explicitly trusted: the path could contain other untrusted certificates.
(cherry picked from commit 52073b76)

(cherry picked from commit c3eb3376)

(cherry picked from commit b093a06866bf632a97a9a0286e2d08f69c3cf7dd)

(cherry picked from commit 3a918ea2bbf4175d9461f81be1403d3781b2c0dc)

(cherry picked from commit f7ac0ec8)

Backport of ASN1_TIME_diff and OPENSSL_gmtime_diff functions from master
branch.

(cherry picked from commit 51b9115b)

is needed to test some profiles/protocols which reject certificates
with unsupported versions.
(cherry picked from commit df316fd4)

(cherry picked from commit 96cfba0f)

(cherry picked from commit 7c8ac505)

(cherry picked from commit b5cadfb5)

(cherry picked from commit 68575593)

just like a "real" server making it easier to trace any problems.

(manually applied from commit 35b0ea4e)

(cherry picked from commit 14536c8c)

by client and send back to server. Also prints an abbreviated summary of
the connection parameters.
(cherry picked from commit 4f3df8be)

New option -verify_quiet to shut up the verify callback unless there is
an error.

(manually applied from commit 2a7cbe77)

Preliminary documentation for chain and verify stores and certificate chain
setting functions.
(cherry picked from commit eeb15452)

(cherry picked from commit 42082eda)

This fix ensures that
* A HelloRequest is retransmitted if not responded by a ClientHello
* The HelloRequest "consumes" the sequence number 0. The subsequent
ServerHello uses the sequence number 1.
* The client also expects the sequence number of the ServerHello to
be 1 if a HelloRequest was received earlier.
This patch fixes the RFC violation.
(cherry picked from commit b62f4daa)

Reported by: Prashant Jaikumar <rmstar@gmail.com>

Fix handling of application data received before a handshake.
(cherry picked from commit 0c75eeac)

PR #3090
Reported by: Franck Youssef <fry@open.ch>

If no new reason codes are obtained after checking a CRL exit with an
error to avoid repeatedly checking the same CRL.

This will only happen if verify errors such as invalid CRL scope are
overridden in a callback.
(cherry picked from commit 4b26645c)

PR: 3028
Fix bug introduced in PEM_X509_INFO_bio which wouldn't process RSA keys
correctly if they appeared first.
(cherry picked from commit 5ae8d6bc)

Bug would emerge when XTS is added to bsaes-armv7.pl. Pointed out by
Ard Biesheuvel of Linaro.
(cherry picked from commit 044f63086051d7542fa9485a1432498c39c4d8fa)

(cherry picked from commit fd8ad019)

(cherry picked from commit 00678437)

(cherry picked from commit 5c57c69f)

(cherry picked from commit 852f837f)

Submitted by: Gisle Vanem
(cherry picked from commit 241fba4e)

(cherry picked from commit f5b132d6)

Conflicts [resloved]:

	Configure

RT: 2582, 2850
(cherry picked from commit ca48ace5)

Conflicts:

	Configure

RT: 2582, 2850
(cherry picked from commit 0b4bb91d)