hg: jdk9/dev/hotspot: 8184036: Restore -XX:UseAVX=3 as product value

[vladimir.kozlov at oracle.com]

Changeset: 9d032191f82f
Author:    kvn
Date:      2017-07-10 14:28 -0700
URL:       http://hg.openjdk.java.net/jdk9/dev/hotspot/rev/9d032191f82f

8184036: Restore -XX:UseAVX=3 as product value
Reviewed-by: dlong, roland

! src/cpu/x86/vm/globals_x86.hpp
! src/share/vm/runtime/commandLineFlagConstraintsCompiler.cpp
! src/share/vm/runtime/commandLineFlagConstraintsCompiler.hpp