Introduce a macro that allows all structure alignment tricks to be rolled up
into a single place.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8845)
We also lay the ground work for various of other the basic AES ciphers.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8700)