[8u40] approval request for 8044146: jdk.nashorn.api.scripting package javadoc should be included in jdk docs

[A. Sundararajan]

Please approve

bug: https://bugs.openjdk.java.net/browse/JDK-8066146
8u-dev webrev: http://cr.openjdk.java.net/~sundar/8066146/8u40/webrev.00/
jdk9 review thread: 
http://mail.openjdk.java.net/pipermail/nashorn-dev/2014-November/003922.html

I had to adjust paths in makefile slightly for jdk8u40. CC'ing jdk9 
reviewers as well...

Thanks,
-Sundar