RFR 8058927: ATG throws ClassNotFoundException

[Coleen Phillimore]

Summary: ClassLoader for array klass was set to null and not the class 
loader of the component type.

open webrev at http://cr.openjdk.java.net/~coleenp/8058843
bug link https://bugs.openjdk.java.net/browse/JDK-8058843

See bug for more details.

Ran testbase, jtreg and jck tests, not that they found this bug in the 
first place.  Boris verified the fix with ATG.

Thank you to David Holmes for finding it through visual inspection of 
the original change.

Thanks,
Coleen