Don't use messages for errors by default

Use empty string for message property of builtin error objects
by default. Add ERROR_MESSAGES build option.

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

jerry-core/ecma/builtin-objects/ecma-builtin-date.c

@@ -461,7 +461,7 @@ ecma_builtin_date_now (ecma_value_t this_arg __attr_unused___) /**< this argumen
 
   if (gettimeofday (&tv, NULL) != 0)
   {
-    return ecma_raise_type_error ("gettimeofday failed");
+    return ecma_raise_type_error (ECMA_ERR_MSG ("gettimeofday failed"));
   }
 
   *now_num_p = ((ecma_number_t) tv.tv_sec) * 1000.0 + ((ecma_number_t) (tv.tv_usec / 1000));