Add name to the function property names (#4760)

Furthermore prototype should be the first property.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/jerry/es.next/function-properties.js

@@ -44,3 +44,9 @@ assert(getProperties(bound_func) == "dummy caller arguments prototype");
 // 'print' is an external function
 Object.setPrototypeOf(print, prototype_obj);
 assert(getProperties(print) == "dummy length caller arguments");
+
+function f1() {}
+assert(Reflect.ownKeys(f1).toString() === "prototype,length,name,caller,arguments")
+
+async function f2() {}
+assert(Reflect.ownKeys(f2).toString() === "length,name")

tests/jerry/es.next/regression-test-issue-3267.js

@@ -17,6 +17,7 @@ Object.preventExtensions(hasProp);
 assert (Object.isSealed(hasProp) === false);
 
 var keys = Object.getOwnPropertyNames(hasProp);
-assert (keys.length === 1);
-assert (keys[0] === "length");
-
+assert (keys.length === 2);
+/* Note: the order is currently wrong. */
+assert (keys[0] === "name");
+assert (keys[1] === "length");