hg: jdk/sandbox: 8231563: ZGC: Fails to warn when user sets the max heap size to larger than 16TB

[chris.hegarty at oracle.com]

Changeset: 389e50d98dc3
Author:    stefank
Date:      2019-09-27 09:01 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/389e50d98dc3

8231563: ZGC: Fails to warn when user sets the max heap size to larger than 16TB
Reviewed-by: tschatzl, pliden

! src/hotspot/cpu/aarch64/gc/z/zGlobals_aarch64.hpp
! src/hotspot/cpu/x86/gc/z/zGlobals_x86.hpp