Bug 313382 No 'X' close buttons on views
The renderer is currently ignoring the 'closeable' feature for MParts if it's actually represented by a placeholder (i.e. 3.x views).
bundles/org.eclipse.e4.ui.workbench.renderers.swt/src/org/eclipse/e4/workbench/ui/renderers/swt/StackRenderer.java
}
		tb.pack();
		return tb;
	}
	private MMenu getViewMenu(MPart part) {
		if (part.getMenus() == null) {
			return null;
		}
		for (MMenu menu : part.getMenus()) {
			if (menu.getTags().contains(TAG_VIEW_MENU)) {
				return menu;
			}
		}
		return null;
	}
	/**
	 * @param tb
	 */
	private void addMenuButton(MPart part, ToolBar tb, MMenu menu) {
		ToolItem ti = new ToolItem(tb, SWT.PUSH);
		ti.setImage(getViewMenuImage());
		ti.setHotImage(null);
		ti.setToolTipText("View Menu"); 
		ti.setData("theMenu", menu); 
		ti.setData("thePart", part); 
		ti.addSelectionListener(new SelectionListener() {
			public void widgetSelected(SelectionEvent e) {
				showMenu((ToolItem) e.widget);
			}
			public void widgetDefaultSelected(SelectionEvent e) {