Bug 182714 [Contributions] Improve toolbar configurability
bundles/org.eclipse.jface/src/org/eclipse/jface/action/MenuManager.java
return createMenuBar((Decorations) parent);
    }
    /**
     * Disposes of this menu manager and frees all allocated SWT resources.
     * Notifies all contribution items of the dispose. Note that this method does
     * not clean up references between this menu manager and its associated
     * contribution items. Use <code>removeAll</code> for that purpose.
     */
    public void dispose() {
        if (menuExist()) {
			menu.dispose();
		}
        menu = null;
        if (menuItem != null) {
            menuItem.dispose();
            menuItem = null;
        }
        disposeOldImages();
        
        IContributionItem[] items = getItems();
        for (int i = 0; i < items.length; i++) {
            items[i].dispose();
        }
        
        markDirty();
    }
    /* (non-Javadoc)
     * @see org.eclipse.jface.action.IContributionItem#fill(org.eclipse.swt.widgets.Composite)
     */
    public void fill(Composite parent) {