8240840: Rollback whitebox.cpp in push 8240691

Whitebox.cpp should not change in 8240691, which is accidentally included.

Reviewed-by: iklam, ccheung

src/hotspot/share/prims/whitebox.cpp

@@ -1990,6 +1990,12 @@ 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;