Add support for RFC5649 key wrapping with padding.

Add RFC5649 tests to evptests.txt

Based on PR#3434 contribution by Petr Spacek <pspacek@redhat.com>.

EVP support and minor changes added by Stephen Henson.

Doxygen comment block updates by Tim Hudson.

Reviewed-by: Tim Hudson <tjh@openssl.org>

Reviewed-by: Tim Hudson <tjh@openssl.org>

Reviewed-by: Tim Hudson <tjh@openssl.org>

Internal pointers in CCM, GCM and XTS contexts should either be
NULL or set to point to the appropriate key schedule. This needs
to be adjusted when copying contexts.

PR#3272

Submitted by: Ard Biesheuvel.

It worked because it was never called.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

Check and set AlgorithmIdenfier parameters for key wrap algorithms.
Currently these just set parameters to NULL.

Bug would emerge when XTS is added to bsaes-armv7.pl. Pointed out by
Ard Biesheuvel of Linaro.

Add support for key wrap algorithms via EVP interface.

Generalise AES wrap algorithm and add to modes, making existing
AES wrap algorithm a special case.

Move test code to evptests.txt

Submitted by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

Contributor claims ~50% improvement in CTR and ~9% in CBC decrypt
on Cortex-A15.

Submitted by: David Miller

PR: 2874
Submitted by: Tomas Mraz

return value after custom flag was rightly reverted.

(trade 2% small-block performance), engage bit-sliced AES in GCM.

invocation field.

Add complete support for AES GCM ciphersuites including all those in
RFC5288 and RFC5289.