git: openjdk/loom: fibers: new JVMTI test: VThreadUnsupportedTest

[duke]

Changeset: 43e93adc
Author:    lmesnik <leonid.mesnik at oracle.com>
Committer: Serguei Spitsyn <serguei.spitsyn at oracle.com>
Date:      2020-03-07 01:08:29 +0000
URL:       https://git.openjdk.java.net/loom/commit/43e93adc

new JVMTI test: VThreadUnsupportedTest

+ test/hotspot/jtreg/serviceability/jvmti/vthread/VThreadUnsupportedTest/VThreadUnsupportedTest.java
+ test/hotspot/jtreg/serviceability/jvmti/vthread/VThreadUnsupportedTest/libVThreadUnsupportedTest.c