rev 53307 : Backport Shenadoah GC
*** 40,49 **** --- 40,50 ---- requires.extraPropDefns.vmOpts = -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:bootClasses requires.properties= \ sun.arch.data.model \ java.runtime.name \ vm.gc.Z \ + vm.gc.Shenandoah \ vm.graal.enabled \ vm.compiler1.enabled \ vm.compiler2.enabled \ vm.cds \ vm.debug \