git: openjdk/loom: fibers: 1. Added JVMTI TLS test coverage for c- and vthreads; 2. Fixed issue in GetThreadLocalStorage for vthreads

[duke]

Changeset: e18f391c
Author:    Serguei Spitsyn <serguei.spitsyn at oracle.com>
Date:      2020-12-22 21:10:36 +0000
URL:       https://git.openjdk.java.net/loom/commit/e18f391c

1. Added JVMTI TLS test coverage for c- and vthreads; 2. Fixed issue in GetThreadLocalStorage for vthreads

! src/hotspot/share/prims/jvmtiEnv.cpp
! test/hotspot/jtreg/serviceability/jvmti/vthread/MethodExitTest/libMethodExitTest.cpp