the SSL_CONF APIs.

This is complicated a little because the SSL_CTX structure is not available
when the command line is processed: so just check syntax of commands initially
and store them, ready to apply later.

(backport from HEAD)

definitions from e_os.h

Give more meaningful error is attempt made to use incorrect curve.

(from HEAD)

(backport from HEAD)

(backport from HEAD)

(backport from HEAD)

(backport from HEAD)

(backport from HEAD)

side, if possible.

Don't advertise compressed char2 for SuiteB as it is not supported.
(backport from HEAD)

(backport from HEAD)

client hello message. Previously this could only be retrieved on an initial
connection and it was impossible to determine the cipher IDs of any uknown
ciphersuites.
(backport from HEAD)

new ctrl to retrive value of received temporary key in server key exchange message, print out details in s_client
(backport from HEAD)

(backport from HEAD)

perform sanity checks on server certificate type as soon as it is received instead of waiting until server key exchange
(backport from HEAD)

(backport from HEAD)

(backport from HEAD)

a STACK_OF(X509): replace equivalent functionality in several places
by the equivalent call.
(backport from HEAD)

(backport from HEAD)

(backport from HEAD)

by a certificate chain. Add additional tests to handle client
certificates: checks for matching certificate type and issuer name
comparison.

Print out results of checks for each candidate chain tested in
s_server/s_client.
(backport from HEAD)

(backport from HEAD)