hg: loom/loom: 2 new changesets

[ron.pressler at oracle.com]

Changeset: 549019922c78
Author:    rpressler
Date:      2018-12-05 17:41 +0000
URL:       http://hg.openjdk.java.net/loom/loom/rev/549019922c78

fix preempt bug

! src/hotspot/share/runtime/continuation.cpp

Changeset: 679d52209695
Author:    rpressler
Date:      2018-12-05 17:42 +0000
URL:       http://hg.openjdk.java.net/loom/loom/rev/679d52209695

merge