Merge pull request #335 from dgarske/asynccrypt

Asynchronous crypto and wolf event support

wolfcrypt/src/error.c

@@ -374,6 +374,9 @@ const char* wc_GetErrorString(int error)
     case HASH_TYPE_E:
         return "Hash type not enabled/available";
 
+    case WC_PENDING_E:
+        return "wolfCrypt Operation Pending (would block / eagain) error";
+
     default:
         return "unknown error number";