[8u40] Request for approval: JDK-8047764: Indexed or polymorphic set on global affects Object.prototype

[Hannes Wallnoefer]

Please approve backport of JDK-8047764 to 8u40.

Bug: https://bugs.openjdk.java.net/browse/JDK-8047764
Webrev: http://cr.openjdk.java.net/~hannesw/8047764/
Review thread: 
http://mail.openjdk.java.net/pipermail/nashorn-dev/2014-September/003485.html
Changeset: http://hg.openjdk.java.net/jdk9/dev/nashorn/rev/c1f651636d9c

The patch applies cleanly to 8u40 after fixing path names.

Thanks,
Hannes