hg: jdk/sandbox: Use proper flag aliasing machinery. Avoid setting immutable develop flags in release builds.

[ashipile at redhat.com]

Changeset: 267a6ce379ba
Author:    shade
Date:      2018-01-19 12:24 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/267a6ce379ba

Use proper flag aliasing machinery. Avoid setting immutable develop flags in release builds.

! src/hotspot/share/gc/epsilon/epsilonArguments.cpp
! src/hotspot/share/gc/shared/gcArguments.cpp
! src/hotspot/share/runtime/arguments.cpp
! src/hotspot/share/runtime/globals.hpp