git: openjdk/loom: fibers: Fix SA failures. Enable SA testing.

[duke]

Changeset: 3667e11b
Author:    chris.plummer <chris.plummer at oracle.com>
Date:      2020-04-17 03:07:22 +0000
URL:       https://git.openjdk.java.net/loom/commit/3667e11b

Fix SA failures. Enable SA testing.

! src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/memory/FileMapInfo.java
+ src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/oops/InstanceStackChunkKlass.java
! src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/oops/Metadata.java
! src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/oops/OopUtilities.java
! test/hotspot/jtreg/ProblemList.txt
! test/hotspot/jtreg/TEST.groups
! test/hotspot/jtreg/serviceability/sa/TestIntConstant.java
! test/lib/jdk/test/lib/Platform.java