8214696: Module class should be filtered by core reflection

[Alan Bateman]

I'd like add java.lang.Module to list of classes that has its fields 
filtered from core reflection. As with previous addition in this area, 
this is another class where hacking its fields leads to integrity and 
security issues. The change is trivial:
    http://cr.openjdk.java.net/~alanb/8214696/webrev/index.html

-Alan