* fix TLS layer to consistently use WOLFSSL_FATAL_ERROR for error retvals, rather than literal -1.
* add WC_NO_ERR_TRACE() wrapper around LENGTH_ONLY_E (it does not signify an error condition).
* refactor errcode handling for traceability in wolfSSL_DSA_do_sign(), wolfSSL_DH_size(), wolfSSL_EC_KEY_get_conv_form(), wolfSSL_d2i_DSA_SIG(), wolfSSL_DSA_do_sign(), SetDhInternal(), and wolfSSL_EC_KEY_get_conv_form().
Fix checking of negative with unsigned variables.
Check digestSz for 0 in wc_SSH_KDF() so that no possibility of dividing
by zero.
Change XMEMCPY to XMEMSET in renesas_sce_util.c.
Fix test.c to free prvTmp and pubTmp on read error.
Remove unused variables.
XFREE checks for NULL so don't check before call.
Move variable declarations to reduce scope.
* Refactor the PEM saving code in `test.c`, so its not using large 4K buffer and calculates based on DER.
* Enable ECC key generation test even without `WOLFSSL_KEY_GEN`.
* Added `ECC_KEYGEN_SIZE` macro for ECC key generation testing.
* Refactor ECC DER key generation to use `ECC_BUFSIZE`.
- increase FP_MAX_BITS for OpenSSH
- Add helpful loggin API (names are self-explanatory)
-- wolfSSL_GetLoggingCb
-- WOLFSSL_IS_DEBUG_ON
- Define WOLFSSL_EC_METHOD as an alias of WOLFSSL_EC_GROUP
- Add wolfSSL_EC_GROUP_method_of which really just returns the group itself
- Add wolfSSL_EC_METHOD_get_field_type which gets the curve type of the WOLFSSL_EC_GROUP(remember that WOLFSSL_EC_METHOD is an alias of WOLFSSL_EC_GROUP for now)
- Modify Base64_Decode so that it accepts arbitrary PEM line length
- Modify PemToDer so that it accepts private keys with a custom -----BEGIN * PRIVATE KEY----- header
* Add define `WOLFSSL_BASE16` to explicitly expose base16 support.
* Add `./configure --enable-base16` option (disabled by default in configure, but enabled in coding.h when required internally).
* Added base16 tests in test.c `base16_test`.
* Enabled base64 decode tests when `WOLFSSL_BASE64_ENCODE` is not defined.
