hg: jdk/hs: 8187809: UseMembar should be set true and deprecate the flag

[robbin.ehn at oracle.com]

Changeset: 0cd18aa4f7b6
Author:    rehn
Date:      2017-11-10 09:16 +0100
URL:       http://hg.openjdk.java.net/jdk/hs/rev/0cd18aa4f7b6

8187809: UseMembar should be set true and deprecate the flag
Reviewed-by: dcubed, sspitsyn, dholmes

! src/hotspot/cpu/ppc/globals_ppc.hpp
! src/hotspot/cpu/s390/globals_s390.hpp
! src/hotspot/cpu/sparc/globals_sparc.hpp
! src/hotspot/cpu/x86/globals_x86.hpp
! src/hotspot/share/runtime/arguments.cpp