hg: nashorn/jdk8/nashorn: 8023531: new RegExp('').toString() should return '/(?:)/'

[hannes.wallnoefer at oracle.com]

Changeset: 8ad9bcb04e6d
Author:    hannesw
Date:      2013-08-22 17:23 +0200
URL:       http://hg.openjdk.java.net/nashorn/jdk8/nashorn/rev/8ad9bcb04e6d

8023531: new RegExp('').toString() should return '/(?:)/'
Reviewed-by: sundar, jlaskey

! src/jdk/nashorn/internal/runtime/ScriptObject.java
! src/jdk/nashorn/internal/runtime/WithObject.java
! src/jdk/nashorn/internal/runtime/regexp/RegExp.java
+ test/script/basic/JDK-8023531.js