Reset list of supported sig algorithms before sending certificate
request on server.
Refactored setting of ticket for both TLS13 and earlier.
Remember the type of key for deciding which sig alg to use with TLS13
CertificateVerify.
RSA PKCS #1.5 not allowed in TLS13 for CertificateVerify.
Remove all remaining DTLS code as spec barely started.
Turn off SHA512 code where decision based on cipher suite hash.
Fix fragment handling to work with encrypted messages.
Test public APIS.

Do version negotiation first. Look for, parse and negotiate with
SupportedVersions extension upfront. Only need to handle TLS 1.3
ClientHello after this.
Any version greater than TLS 1.2 in Legacy Version field is translated
to TLS 1.2.
Fix preMasterSz to when not using PreSharedKey.
Not finsing KeyShare in ClientHello sends a missing_extension alert.
Decoding signature algorithms in new TLS 1.3 range now returns error
when not recognized.
Don't allow RSA PKCS #1.5 signatures to be verified.
Fix accept when downgraded from TLS 1.3 to go to wolfSSL_accept.
Fix server state when sending ChangeCipherSpec for MiddleBox
compatability.
Send a new session ticket even when resuming.

RSA PKCS #1.5 padding for signing is not reliant on a random.

otherwise if profile_str_len is > strlen(gSrtpProfiles[i].name) we end up
comparing memory past gSrtpProfiles[i].name. -fsanitize=address catches this:

```
==100159==ERROR: AddressSanitizer: global-buffer-overflow on address 0x7f40d8d533b2 at pc 0x7f40d8eb014f bp 0x7f40d50fe240 sp 0x7f40d50fd9e8
READ of size 21 at 0x7f40d8d533b2 thread T107
    #0 0x7f40d8eb014e in MemcmpInterceptorCommon(void*, int (*)(void const*, void const*, unsigned long), void const*, void const*, unsigned long) /build/gcc/src/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:860
    #1 0x7f40d8eb06e6 in __interceptor_memcmp /build/gcc/src/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:892
    #2 0x7f40d8eb06e6 in __interceptor_memcmp /build/gcc/src/gcc/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:887
    #3 0x7f40d8c2e830 in DtlsSrtpFindProfile src/ssl.c:1310
    #4 0x7f40d8c2e9ed in DtlsSrtpSelProfiles src/ssl.c:1347
    #5 0x7f40d8c2eada in wolfSSL_CTX_set_tlsext_use_srtp src/ssl.c:1359
    #6 0x563bf381b4c5 in server_test examples/server/server.c:2278
    #7 0x7f40d88f0258 in start_thread (/usr/lib/libpthread.so.0+0x9258)
    wolfSSL#8 0x7f40d88195e2 in __GI___clone (/usr/lib/libc.so.6+0xfe5e2)
```

1. BasicConstraints pathLenConstraint absent vs. 0 —
get_ext_d2i/set_ext/V3_EXT_d2i now distinguish "no constraint" from 0
per RFC 5280 §4.2.1.9, using the existing basicConstPlSet flag.
2. GENERAL_NAME_print GEN_DIRNAME — added missing return-value
normalization so the directory name is actually printed (was emitting
only DirName:).
3. GENERAL_NAME_print GEN_DNS — use ASN1_STRING_print like the EMAIL/URI
cases, avoiding NULL-strData deref and NUL-truncation.
4. X509_print BasicConstraints — print , pathlen:N to match OpenSSL.
5. X509_print Extended Key Usage — print Any Extended Key Usage (was
omitted).
6. get_ext_d2i CRL_DIST_OID double-free — null gn immediately after
ownership transfers to dp, so an error from the next push doesn't free
it twice.
7. X509V3_EXT_print SAN truncation/failure — match XSNPRINTF size cap to
the allocation; was truncating at indent==1 and failing at indent>=2.
8. X509V3_EXT_print AUTH_KEY/SUBJ_KEY NULL deref — NULL-check
i2s_ASN1_STRING return before passing to %s.
9. X509_add_ext SAN type confusion — reject DIRNAME/RID/X400/EDIPARTY;
only the ASN1_STRING*-backed types are read via gn->d.ia5. Was
performing a wild-pointer XMEMCPY in add_altname_ex.

Also: extracted the SAN and WOLFSSL_CUSTOM_OID arms of X509_add_ext into
static helpers (behavior-preserving).

Regression tests added for #1–5 and wolfSSL#9; existing GENERAL_NAME_print test
hardened (gives GEN_DIRNAME a real directoryName, eliminating an OOB
read that the print fix would otherwise expose).