hg: shenandoah/jdk: Fixed critical native typo and test

[zgu at redhat.com]

Changeset: 6e41fd403768
Author:    zgu
Date:      2018-03-29 08:23 -0400
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/6e41fd403768

Fixed critical native typo and test

! src/hotspot/cpu/x86/sharedRuntime_x86_64.cpp
! src/hotspot/share/runtime/sharedRuntime.cpp
! src/hotspot/share/runtime/sharedRuntime.hpp
! test/hotspot/jtreg/gc/shenandoah/libCriticalNative.c