hg: jdk/jdk: 8209894: ZGC: Cap number of GC workers based on heap size

[per.liden at oracle.com]

Changeset: 04b857edadec
Author:    pliden
Date:      2018-08-28 09:06 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/04b857edadec

8209894: ZGC: Cap number of GC workers based on heap size
Reviewed-by: ehelin, tschatzl

! src/hotspot/share/gc/z/zWorkers.cpp
! src/hotspot/share/gc/z/zWorkers.hpp