* Added new `wolfSSL_CTX_load_verify_locations_ex` that supports flags `WOLFSSL_LOAD_FLAG_IGNORE_ERR`, `WOLFSSL_LOAD_FLAG_DATE_ERR_OKAY` and `WOLFSSL_LOAD_FLAG_PEM_CA_ONLY`.
* Fix for `PemToDer` to handle PEM which may include a null terminator in length at end of file length causing wrong error code to be returned. Added test case for this. (ZD 4278)
* Added macro to override default flags for `wolfSSL_CTX_load_verify_locations` using `WOLFSSL_LOAD_VERIFY_DEFAULT_FLAGS`.
* Added tests for loading CA PEM's from directory using `wolfSSL_CTX_load_verify_locations` and `wolfSSL_CTX_load_verify_locations_ex` with flags.
* Added tests for `wolfSSL_CertManagerLoadCABuffer`.
* Updated the expired test certs and added them to `./certs/test/gen-testcerts.sh` script.
1. Added certificates for localhost where the CN and SAN match and differ.
2. Change subject name matching so the CN is checked if the SAN list doesn't exit, and only check the SAN list if present.
3. Added a test case for the CN/SAN mismatch.
4. Old matching behavior restored with build option WOLFSSL_ALLOW_NO_CN_IN_SAN.
5. Add test case for a correct certificate.
Note: The test for the garbage certificate should fail. If you enable the old behavior, that test case will start succeeding, causing the test to fail.
* Fix `MatchDomainName` to also check for remaining len on success check.
* Enhanced `DNS_entry` to include actual ASN.1 length and use it thoughout (was using XSTRLEN).
Added additional tests for matching on domain name:
* Check for bad common name with embedded null (CN=localhost\0h, Alt=None) - Note: Trouble creating cert with this criteria
* Check for bad alternate name with embedded null (CN=www.nomatch.com, Alt=localhost\0h)
* Check for bad common name (CN=www.nomatch.com, Alt=None)
* Check for bad alternate name (CN=www.nomatch.com, Alt=www.nomatch.com)
* Check for good wildcard common name (CN=*localhost, Alt=None)
* Check for good wildcard alternate name (CN=www.nomatch.com, Alt=*localhost)
