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
createRefreshWorkspaceOnStartupPref(composite);
		createExitPromptPref(composite);
		createShowTasksOnAutoBuildPref(composite);
		createStickyCyclePref(composite);
		
		createSpace(composite);
		createSaveIntervalGroup(composite);
		
		createSpace(composite);
		createOpenModeGroup(composite);
		
		return composite;
	}
	protected void createShowTasksOnAutoBuildPref(Composite composite) {
		showTasks = new Button(composite, SWT.CHECK);
		showTasks.setText(IDEWorkbenchMessages.getString("WorkbenchPreference.showTasks")); 
		showTasks.setFont(composite.getFont());
		showTasks.setSelection(getIDEPreferenceStore().getBoolean(IDEInternalPreferences.SHOW_TASKS_ON_BUILD));
	}
	protected void createExitPromptPref(Composite composite) {
		exitPromptButton = new Button(composite, SWT.CHECK);
		exitPromptButton.setText(IDEWorkbenchMessages.getString("WorkbenchPreference.exitPromptButton")); 
		exitPromptButton.setFont(composite.getFont());
		
		exitPromptButton.setEnabled(false);
		
	}
	protected void createRefreshWorkspaceOnStartupPref(Composite composite) {
		refreshButton = new Button(composite, SWT.CHECK);
		refreshButton.setText(IDEWorkbenchMessages.getString("WorkbenchPreference.refreshButton"));