8240691: ClhsdbCDSJstackPrintAll incorrectly thinks CDS is in use

Fix by checking "UseSharedSpaces = false" for CDS enabled.

Reviewed-by: iklam

src/hotspot/share/prims/whitebox.cpp

@@ -1990,12 +1990,6 @@ WB_END
 
 WB_ENTRY(jboolean, WB_IsCDSIncludedInVmBuild(JNIEnv* env))
 #if INCLUDE_CDS
-# ifdef _LP64
-    if (!UseCompressedOops || !UseCompressedClassPointers) {
-      // On 64-bit VMs, CDS is supported only with compressed oops/pointers
-      return false;
-    }
-# endif // _LP64
   return true;
 #else
   return false;

test/hotspot/jtreg/serviceability/sa/ClhsdbCDSCore.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -163,7 +163,7 @@ public static void main(String[] args) throws Exception {
                 throw new SkippedException("Could not determine the UseSharedSpaces value");
             }
 
-            if (!useSharedSpacesOutput.contains("true")) {
+            if (useSharedSpacesOutput.contains("UseSharedSpaces = false")) {
                 // CDS archive is not mapped. Skip the rest of the test.
                 cleanup();
                 throw new SkippedException("The CDS archive is not mapped");

test/hotspot/jtreg/serviceability/sa/ClhsdbCDSJstackPrintAll.java

@@ -69,7 +69,7 @@ public static void main(String[] args) throws Exception {
                 throw new SkippedException("Could not determine the UseSharedSpaces value");
             }
 
-            if (!useSharedSpacesOutput.contains("true")) {
+            if (useSharedSpacesOutput.contains("UseSharedSpaces = false")) {
                 // CDS archive is not mapped. Skip the rest of the test.
                 LingeredApp.stopApp(theApp);
                 throw new SkippedException("The CDS archive is not mapped");