[8u20] please approve backport of 8044520: Nashorn cannot execute node.js's express module

[A. Sundararajan]

Please approve.

Bug: https://bugs.openjdk.java.net/browse/JDK-8044520
Webrev: http://cr.openjdk.java.net/~sundar/8044520/
jdk9 review thread: 
http://mail.openjdk.java.net/pipermail/nashorn-dev/2014-June/003027.html
jdk9 changeset: http://hg.openjdk.java.net/jdk9/dev/nashorn/rev/f855686309df

Thanks
-Sundar