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/WorkbenchActionBuilder.java
public static void setIncludeRebuildActions(boolean include) {
		
		INCLUDE_REBUILD_ACTIONS = include;
		IWorkbenchWindow[] windows = PlatformUI.getWorkbench().getWorkbenchWindows();
		for (int i = 0; i < windows.length; i++) {
		    WorkbenchActionBuilder builder = IDEWorkbenchAdvisor.getActionBuilder(windows[i]);
			builder.doSetIncludeRebuildActions(include);
		}
	}
	void doSetIncludeRebuildActions(boolean include) {
		IMenuManager menubar = actionBarConfigurer.getMenuManager();
		IMenuManager manager = menubar.findMenuUsingPath(IWorkbenchActionConstants.M_PROJECT);
		if (manager == null)
			return;
		try {
			if (include) {
				manager.insertAfter(IDEActionFactory.BUILD_PROJECT.getId(), rebuildProjectAction);
				manager.insertAfter(IDEActionFactory.BUILD.getId(), rebuildAllAction);
			} else {
				manager.remove(IDEActionFactory.REBUILD_ALL.getId());
				manager.remove(IDEActionFactory.REBUILD_PROJECT.getId());
			}
		} catch (IllegalArgumentException e) {
		    
		}
		manager.update(false);
	}
	/**
	 * Creates and returns the Help menu.
	 */