Bug 53888 Mnemonic collision Text Editor -> Quick Diff
20040303 The Make Default and Restore Defaults button have the same mnemonic
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/QuickdiffConfigurationBlock.java
private SelectionListener fCheckBoxListener= new SelectionListener() {
		public void widgetDefaultSelected(SelectionEvent e) {
		}
		public void widgetSelected(SelectionEvent e) {
			Button button= (Button) e.widget;
			fStore.setValue((String) fCheckBoxes.get(button), button.getSelection());
		}
	};
	
	/**
	 * List for the reference provider default. 
	 * @since 3.0
	 */
	private org.eclipse.swt.widgets.List fQuickDiffProviderList;
	/**
	 * The reference provider default's list model.
	 * @since 3.0 
	 */
	private String[][] fQuickDiffProviderListModel;
	/**
	 * Button controlling default setting of the selected reference provider.
	 * @since 3.0
	 */
	private Button fSetDefaultButton;
	/**
	 * The quick diff color model.
	 * @since 3.0 
	 */
	private String[][] fQuickDiffModel;
	/**