
Fix SEH and stack handling in Win64 build. (cherry picked from commit 977f32e85241cba8be53e44dade32231e8a91718)
This is an OpenSSL-compatible version of AES (also called Rijndael). aes_core.c is basically the same as rijndael-alg-fst.c but with an API that looks like the rest of the OpenSSL symmetric cipher suite.