RFR (JDK 10) 8172298: Reduce memory churn when linking VarHandles operations

[Paul Sandoz]

Hi,

Please review some small memory-based optimisations for VarHandle linkage:

  
http://cr.openjdk.java.net/~psandoz/jdk10/JDK-8172298-varhandle-link-reduce-memory/webrev/
 
<http://cr.openjdk.java.net/~psandoz/jdk10/JDK-8172298-varhandle-link-reduce-memory/webrev/>

This will be pushed to the newly opened JDK 10 repo.

Thanks,
Paul.