git: openjdk/loom: fibers: 2 new changesets

[duke]

Changeset: a6609184
Author:    Alan Bateman <alan.bateman at oracle.com>
Date:      2021-03-24 14:05:50 +0000
URL:       https://git.openjdk.java.net/loom/commit/a6609184

Restore latest thread executor after termination

! src/java.base/share/classes/java/util/concurrent/ThreadExecutor.java

Changeset: cbb80455
Author:    Alan Bateman <alan.bateman at oracle.com>
Date:      2021-03-25 07:52:06 +0000
URL:       https://git.openjdk.java.net/loom/commit/cbb80455

Add temporary method to test if target VM supports virtual threads

! make/data/jdwp/jdwp.spec
! src/jdk.jdi/share/classes/com/sun/jdi/VirtualMachine.java
! src/jdk.jdi/share/classes/com/sun/tools/jdi/VirtualMachineImpl.java
! src/jdk.jdwp.agent/share/native/libjdwp/VirtualMachineImpl.c