RFR 8135178: importPackage not working even with load "Mozilla compatibility script"

[Sundararajan Athijegannathan]

Please review.

Bug: https://bugs.openjdk.java.net/browse/JDK-8135178
Webrev:  http://cr.openjdk.java.net/~sundar/8135178/webrev.00/

Thanks,
-Sundar