Bug 327980 Part activation history should not be perspective-dependent
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/PartServiceImpl.java
private EventHandler selectedHandler = new EventHandler() {
		public void handleEvent(Event event) {
			
			if (!listeners.isEmpty()) {
				Object oldSelected = event.getProperty(UIEvents.EventTags.OLD_VALUE);