[8u-dev] Request for Approval: 8137240: Negative lookahead in RegEx breaks backreference

[Hannes Wallnoefer]

Please approve backport of 8137240 to 8u-dev.

Bug: https://bugs.openjdk.java.net/browse/JDK-8137240
Webrev: http://cr.openjdk.java.net/~hannesw/8137240/webrev/
Review thread: 
http://mail.openjdk.java.net/pipermail/nashorn-dev/2016-June/006358.html

Changes apply cleanly to jdk8u-dev after path reshuffling.

Thanks,
Hannes