RFR (S) JDK-8139651 JDK-8139651, ConcurrentG1Refine uses ints for many of its members that should be unsigned types

[Kim Barrett]

> On Feb 19, 2016, at 12:04 PM, Joseph Provino <joseph.provino at oracle.com> wrote:
> 
> New webrev is here: http://cr.openjdk.java.net/~jprovino/8139651/webrev.02

It looks like this incorrect change is still in place:
src/share/vm/gc/g1/ptrQueue.hpp
220   size_t _process_completed_threshold;
242   size_t _max_completed_queue;