1. Define Timeval in callbacks.h if the file sys/time.h is missing.
2. When picking the correct strtok() function, take into account MINGW64.
3. In the example server, changed the call to SSL_accept_ex() as it doesn't exist. Using wolfSSL_accept_ex(). Only a problem when setting WOLFSSL_CALLBACKS.
4. PickHashSigAlgo() is missing a ; when WOLFSSL_CALLBACKS is set.
* Fixed bug with "wolfSSL_get_cipher_name_internal" for loop using incorrect max length for "cipher_name_idx" (this caused fault when library built with NO_ERROR_STRINGS and calling it).
* Adds new "GetCipherNameInternal" function to get cipher name using internal "cipherSuite" index only (for scenario where WOLFSSL object does not exist).
* Implements API's for "wolf_OBJ_nid2sn" and "wolf_OBJ_sn2nid". Uses the ecc.c "ecc_sets" table to locate NID (ECC ID and NID are same).
* Added "WOLFSSL*" to HandShakeInfo.
* Allowed "SetName" to be exposed.
* Added "wolfSSL_X509_load_certificate_buffer". Refactor "wolfSSL_X509_load_certificate_file" to use new function (no duplicate code).
