Introduce builtin intrinsic object to share property values between builtin objects (#3490)

Fixed:
 - Global symbol access
 - Array.prototype.values and Array.prototype[Symbol.iterator] must be the same function object

To test the new functionality arguments object Symbol.iterator property is added.

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

jerry-core/ecma/base/ecma-globals.h

@@ -666,7 +666,7 @@ typedef enum
   ECMA_ITERATOR_KEYS, /**< List only key indices */
   ECMA_ITERATOR_VALUES, /**< List only key values */
   ECMA_ITERATOR_KEYS_VALUES, /**< List key indices and values */
-} ecma_iterator_type_t;
+} ecma_array_iterator_type_t;
 
 #endif /* ENABLED (JERRY_ES2015) */