Request Review JDK-8182492: docs bundle needs legal notices for 3rd party libraries distributed for javadoc search

[Mandy Chung]

http://cr.openjdk.java.net/~mchung/jdk9/webrevs/8182492/webrev.00/

JDK docs build enables javadoc search that distributes jquery and jszip.
The docs bundle needs to include legal notices for these 3rd party
libraries.

In addition, pako.md is missing and fixed in this patch.

Mandy