hg: jdk/jdk: 8221639: [i386] expand_exec_shield_cs_limit workaround is undefined code after JDK-8199717

[sgehwolf at redhat.com]

Changeset: 7acebe4d65e2
Author:    sgehwolf
Date:      2019-04-18 13:58 +0200
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/7acebe4d65e2

8221639: [i386] expand_exec_shield_cs_limit workaround is undefined code after JDK-8199717
Summary: Only perform this optimization for x86_64
Reviewed-by: dholmes, andrew

! src/hotspot/os/linux/os_linux.cpp
! src/hotspot/os_cpu/linux_x86/os_linux_x86.cpp