hg: jdk9/dev/nashorn: 8167289: Backport ES6 updates from Graal.js

[hannes.wallnoefer at oracle.com]

Changeset: 1e015daa6301
Author:    hannesw
Date:      2016-10-07 10:30 +0200
URL:       http://hg.openjdk.java.net/jdk9/dev/nashorn/rev/1e015daa6301

8167289: Backport ES6 updates from Graal.js
Reviewed-by: lagergren, sundar
Contributed-by: andreas.woess at oracle.com

! src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/LiteralNode.java
! src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Parser.java