hg: jdk/jdk11: 8207056: Epsilon GC to support object pinning

[zgu at redhat.com]

Changeset: 0d2e45b25c3d
Author:    zgu
Date:      2018-07-11 13:55 -0400
URL:       http://hg.openjdk.java.net/jdk/jdk11/rev/0d2e45b25c3d

8207056: Epsilon GC to support object pinning
Summary: Epsilon GC to use object pinning to avoid expensive GCLocker
Reviewed-by: shade, rkennke

! src/hotspot/share/gc/epsilon/epsilonHeap.hpp