RFR(S): 8152101: Move G1 concurrent refinement adjustment code out of G1CollectorPolicy

[Kim Barrett]

> On Mar 17, 2016, at 9:27 AM, Mikael Gerdin <mikael.gerdin at oracle.com> wrote:
> 
> Hi all,
> 
> Here's yet another small G1CollectorPolicy cleanup patch.
> This time I want to move adjust_concurrent_refinement out of the policy into the ConcurrentG1Refine class.
> The method almost exclusively operates on the ConcurrentG1Refine so in my mind this makes perfect sense.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8152101
> Webrev: http://cr.openjdk.java.net/~mgerdin/8152101/webrev.0/
> Testing: JPRT, RBT GC testing, Perf testing in aggregate with the previous changes showed significant changes.
> 
> /Mikael

Looks good.