RFR 8081809: Missing final modifier in method parameters (nashorn code convention)

[A. Sundararajan]

Hi,

Please review http://cr.openjdk.java.net/~sundar/8081809/ for 
https://bugs.openjdk.java.net/browse/JDK-8081809

Also fixing sample "find_nonfinals.js" to skip abstract, native methods 
and skip classes that result in ExceptionInInitializerError.

Thanks,
-Sundar