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/operations/ecma-promise-object.c

@@ -679,7 +679,7 @@ ecma_promise_new_capability (ecma_value_t constructor)
 
   /* 6. */
   ecma_value_t promise = ecma_op_function_construct (constructor_obj_p,
-                                                     ECMA_VALUE_UNDEFINED,
+                                                     constructor_obj_p,
                                                      &executor,
                                                      1);
   ecma_deref_object (executor_p);