RFR(XS): 8163973: VM Anonymous classes should not call Class File Load Hooks

[Rachel Protacio]

Hello,

Please review this change, which makes sure class file load hooks are 
not called for VM anonymous classes. See 
http://mail.openjdk.java.net/pipermail/core-libs-dev/2016-January/038353.html 
for justification.

Passes JPRT and RBT.

Bug: https://bugs.openjdk.java.net/browse/JDK-8163973
Open webrev: http://cr.openjdk.java.net/~rprotacio/8163973.00/

Thank you!
Rachel