Change Karatsuba implementations for x86_64.
Fix ECC code to better handle corner cases.
Add 'lower' versions of functions wehn an input is known to be less than m.
Add mont_add/dbl/tpl/sub for P384.
Change ECC point add to be cache-attack resistant.
Change mod_exp to be cache-attack resistant.
src/internal.c: use XMEMCMP(), not ==, to compare array elements (fixes conflict of 74408e3ee3 vs 617eda9d44);
fix spelling of NAMEDGROUP_LEN (was NAMEDGREOUP_LEN);
src/ssl.c: in CheckcipherList() and wolfSSL_parse_cipher_list(), use XMEMCPY(), not XSTRNCPY(), to avoid (benign) -Wstringop-truncation;
scripts/sniffer-tls13-gen.sh: fix for shellcheck SC2242 (exit 1, not -1).
`WOLFSSL_ERROR_CODE_OPENSSL` breaks ABI compatiblity due to changing the expected return code. Let's only do this when building with the full compatibility layer.
- use the `WOLFSSL_BUF_MEM` struct to resize the internal memory buffer
- add a `WOLFSSL_BIO_RESIZE_THRESHOLD` define that will be used to determine how often to shrink the internal buffer. This should cut down on the number of free/malloc calls made significantly. This should help with our inefficient 1 byte reads in `loadX509orX509REQFromPemBio`.
- implement `wolfSSL_BUF_MEM_resize` which allows bi-directional buffer size manipulation
- return `1` from `wolfSSL_BIO_set_mem_eof_return` instead of `0` for success
- bind requires ALPN
- `OPENSSL_COMPATIBLE_DEFAULT` defined for bind
- `WOLFSSL_ERROR_CODE_OPENSSL` defined when using compatibility layer
- return `bio->eof` on no pending data to read in memory BIO (defaults to `WOLFSSL_BIO_ERROR`)
- `flags` is no longer an input parameter in `wolfSSL_ERR_get_error_line_data`
- allow lazy parameter loading in `wolfSSL_DH_set0_key`
- implement reference counter in `WOLFSSL_EC_KEY`
- load serial number from `x509->serialNumber` if `x509->serial` is empty
* Adds stateful handling of DH shared secret computation in `SetupKeys`.
* Improved the decrypt handling to use internal functions and avoid generating alerts on failures.
* Fix for sniffer resume due to missing `sessionIDSz` broken in #4807.
* Fix sniffer test cases to split resume (session_ticket) tests.
* Add `snifftest` list of build features so test script can gate running resume test.
