hg: portola/jdk9/hotspot: Check for PaX during initialization

[mikael.vidstedt at oracle.com]

Changeset: 773dc9488fac
Author:    mikael
Date:      2017-05-04 11:23 -0700
URL:       http://hg.openjdk.java.net/portola/jdk9/hotspot/rev/773dc9488fac

Check for PaX during initialization

! src/os/linux/vm/os_linux.cpp