Bug 50340 [Contributions] Large toolbar buttons under Windows XP
200401201132 - enable SWT to use Windows XP widgets (provide java.exe.manifest file; for details see SWT mailing list) - observe: the toolbar buttons are really large !! See attached screen shot
bundles/org.eclipse.jface/src/org/eclipse/jface/action/ActionContributionItem.java
* is disposed.  However, it has the advantage that the same image in different contribution managers
	 * is only ever created once.
	 */
	private ImageCache getImageCache() {
		ImageCache cache = globalImageCache;
		if (cache == null) {
			globalImageCache = cache = new ImageCache();
			Display display = Display.getDefault();
			if (display != null) {
				display.disposeExec(new Runnable() {
					public void run() {
						if (globalImageCache != null) {
							globalImageCache.dispose();
							globalImageCache = null;
						}
					}
				});
			}
		}
		return cache;
	}
	/**
	 * Returns the listener for SWT menu item widget events.
	 * 
	 * @return a listener for menu item events
	 */
	private Listener getMenuItemListener() {
		if (menuItemListener == null) {
			menuItemListener = new Listener() {
				public void handleEvent(Event event) {