Rework the core of class parsing/runtime semantic (#3598)

Changes:
 - Use the pre-scanner to provide information for the parser about the existence of the class constructor
 - The allocation of the super declarative environment is no longer needed
 - The VM frame context holds the information about the this binding status
 - Reduce the number of class related VM/CBC instructions
 - Improve ecma_op_function_{construct, call} to properly set new.target

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu

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

@@ -103,7 +103,7 @@ ecma_builtin_global_object_eval (ecma_value_t x) /**< routine's first argument *
 #if ENABLED (JERRY_ES2015)
   if (vm_is_direct_eval_form_call ())
   {
-    parse_opts |= ECMA_GET_SUPER_EVAL_PARSER_OPTS ();
+    parse_opts |= ECMA_GET_LOCAL_PARSE_OPTS ();
   }
 #endif /* ENABLED (JERRY_ES2015) */