Bug 55799 [Intro] When new welcome is available, don't show the old one
One of the M8 candidate builds (any): 1) Open Eclipse on a new workspace 2) Close the new Welcome when it opens 3) Close Eclipse 4) Open Eclipse again. Observe: the old Welcome editor is opened. Expectation: when a product has a valid Intro, old welcome should never be shown.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
if (activityHelper != null) {
			activityHelper.shutdown();
			activityHelper = null;
		}
		if (IDEWorkbenchPlugin.getPluginWorkspace() != null) {
			disconnectFromWorkspace();
		}
	}
	/* (non-Javadoc)
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#eventLoopException
	 */
	public void eventLoopException(Throwable exception) {
		super.eventLoopException(exception);
		if (exceptionHandler != null) {
			exceptionHandler.handleException(exception);
		} else {
			if (getWorkbenchConfigurer() != null) {
			    getWorkbenchConfigurer().emergencyClose();
			}
		}
	}
	/* (non-Javadoc)
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#preWindowShellClose
	 */
	public boolean preWindowShellClose(IWorkbenchWindowConfigurer windowConfigurer) {
		if (getWorkbenchConfigurer().getWorkbench().getWorkbenchWindowCount() > 1) {
			return true;
		}