hg: shenandoah/jdk11: [backport] 8229921: Shenandoah: Make Traversal mode non-experimental

[rkennke at redhat.com]

Changeset: ccf60608b872
Author:    rkennke
Date:      2019-08-20 18:39 +0200
URL:       https://hg.openjdk.java.net/shenandoah/jdk11/rev/ccf60608b872

[backport] 8229921: Shenandoah: Make Traversal mode non-experimental
Reviewed-by: shade

! src/hotspot/share/gc/shenandoah/heuristics/shenandoahTraversalAggressiveHeuristics.cpp
! src/hotspot/share/gc/shenandoah/heuristics/shenandoahTraversalHeuristics.cpp
! test/hotspot/jtreg/gc/shenandoah/options/TestHeuristicsUnlock.java