RFR: 8148202: move lookup of Java class and hub from ResolvedJavaType to ConstantReflectionProvider

[Doug Simon]

Most access to VM constants in JVMCI goes through the ConstantReflectionProvider interface meaning the VM implementation for constant handling is in one place. For historic reasons, some small amount of reflection on VM constants was located in ResolvedJavaType. This issue consolidates these methods to ConstantReflectionProvider.

https://bugs.openjdk.java.net/browse/JDK-8148202
http://cr.openjdk.java.net/~dnsimon/8148202

-Doug