hg: jdk-updates/jdk12u: 8219976: GarbageCollectionNotificationInfo always says "No GC" when running Shenandoah

[zgu at redhat.com]

Changeset: 353b0d381244
Author:    zgu
Date:      2019-03-02 08:33 -0500
URL:       http://hg.openjdk.java.net/jdk-updates/jdk12u/rev/353b0d381244

8219976: GarbageCollectionNotificationInfo always says "No GC" when running Shenandoah
Reviewed-by: rkennke

! src/hotspot/share/gc/shenandoah/shenandoahUtils.cpp