8202052: Disable warnings when building libawt with VS2017
Reviewed-by: erikj, prr
R1.run() invoked
R2.run() invoked
r3.run() invoked
r1.class !== r2.class: true
r2.class !== r3.class: true
Got exception: java.lang.UnsupportedOperationException
Got exception: java.lang.UnsupportedOperationException
(new ExtendsList).size() = 0
(new (Java.extend(ExtendsList)){}).size() = 0