git: openjdk/loom: fibers: 2 new changesets

[duke]

Changeset: f02c5f0f
Author:    Alan Bateman <alan.bateman at oracle.com>
Date:      2020-04-15 12:35:18 +0000
URL:       https://git.openjdk.java.net/loom/commit/f02c5f0f

Running of shutdown hooks shouldn't abort if threads can't be started

! src/java.base/share/classes/java/lang/ApplicationShutdownHooks.java

Changeset: 506fd70c
Author:    Alan Bateman <alan.bateman at oracle.com>
Date:      2020-04-15 12:36:07 +0000
URL:       https://git.openjdk.java.net/loom/commit/506fd70c

Invoke Thread::exit once when thread terminates

! src/hotspot/share/runtime/thread.cpp
! src/java.base/share/classes/java/lang/Thread.java
! test/hotspot/jtreg/ProblemList-vthread.txt