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.

the FIPS capable OpenSSL.

Submitted by: "James 'J.C.' Jones" <james.jc.jones@gmail.com>

Typos.

field which is not unused for custom ciphers.

definitions) so we can use it in EVP GCM code avoiding need to allocate
it.