duplicate aes_decrypt_keyNNN / aes_encrypt_keyNNN with aeskey2.c

[TBOpen]

What is aeskey2.c, there is no reference. If it's included then it conflicts with aes_ni.c when that is used. So it seems if using aes_ni then omit aeskey2.c but if not using aes_ni then include aeskey2.c

I found it, needed to change the line to exclude intel possible for ARM64, but aeskey2.c seems to be some leftover old file that should be remove?

if defined( _WIN64 ) && defined( _MSC_VER ) && !defined (_M_ARM64) \

[BrianGladman]

There is no reference to it because it is not intended for use by anyone building AES from this repository I left it in place because it is part of the original development process.