hg: shenandoah/jdk11: [backport] 8229919: Support JNI Critical functions in object pinning API on x86_32 platforms

[zgu at redhat.com]

Changeset: 161b081be608
Author:    zgu
Date:      2019-10-15 22:22 -0400
URL:       https://hg.openjdk.java.net/shenandoah/jdk11/rev/161b081be608

[backport] 8229919: Support JNI Critical functions in object pinning API on x86_32 platforms
Reviewed-by: rkennke, adinn

! src/hotspot/cpu/x86/sharedRuntime_x86_32.cpp
! test/hotspot/jtreg/gc/shenandoah/jni/CriticalNativeArgs.java
! test/hotspot/jtreg/gc/shenandoah/jni/CriticalNativeStress.java