Bug 46462 [RCP] [Preferences] Workbench switches to double click on each startup
N20031111 I use an pre-RCP workspace. On each startup I have to switch to single mode again.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/IDEWorkbenchPreferencePage.java
saveInterval.setPreferenceStore(getIDEPreferenceStore());
		saveInterval.setPreferencePage(this);
		saveInterval.setTextLimit(Integer.toString(IDEInternalPreferences.MAX_SAVE_INTERVAL).length());
		saveInterval.setErrorMessage(IDEWorkbenchMessages.format("WorkbenchPreference.saveIntervalError", new Object[] { new Integer(IDEInternalPreferences.MAX_SAVE_INTERVAL)})); 
		saveInterval.setValidateStrategy(StringFieldEditor.VALIDATE_ON_KEY_STROKE);
		saveInterval.setValidRange(1, IDEInternalPreferences.MAX_SAVE_INTERVAL);
		IWorkspaceDescription description = ResourcesPlugin.getWorkspace().getDescription();
		long interval = description.getSnapshotInterval() / 60000;
		saveInterval.setStringValue(Long.toString(interval));
		saveInterval.setPropertyChangeListener(new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				if (event.getProperty().equals(FieldEditor.IS_VALID)) 
					setValid(saveInterval.isValid());
			}
		});
		
	}	
	/**
	 * Returns the IDE preference store.
	 */
	protected IPreferenceStore getIDEPreferenceStore() {
		return IDEWorkbenchPlugin.getDefault().getPreferenceStore();
	}
	
	/**
	 *	@see IWorkbenchPreferencePage
	 */
	public void init(IWorkbench aWorkbench) {