Bug 54802 Delete IStatusLineWithProgressManager
M7 IStatusLineWithProgressManager is now obsolete and should be deleted by M8
bundles/org.eclipse.jface/src/org/eclipse/jface/action/StatusLineManager.java
/**
	 * Global group marker used to control positioning of contributions
	 */
	public static final String BEGIN_GROUP = "BEGIN_GROUP"; 
	
	/**
	 * Global group marker used to control positioning of contributions
	 */
	public static final String MIDDLE_GROUP = "MIDDLE_GROUP"; 
	
	/**
	 * Global group marker used to control positioning of contributions
	 */