Bug 91899 [Markers] IMarker.setAttribute fails when attributeName = IMarker.LOCATION
Calling setAttribute(IMarker.LOCATION, "foo") on an IMarker instance does nothing---the "Location" column in the Problem View remains blank.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/FieldMessage.java
/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.views.markers.internal.IField#getColumnHeaderImage()
	 */
	public Image getColumnHeaderImage() {
		return null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.views.markers.internal.IField#getValue(java.lang.Object)
	 */
	public String getValue(Object obj) {
		if (obj == null)
			return MarkerMessages.FieldMessage_NullMessage;
		if (obj instanceof MarkerNode){
			MarkerNode node = (MarkerNode) obj;
	    	if(node.isConcrete())
	    		return node.getDescription();
	    	return Util.EMPTY_STRING;
		}
		
		if(obj instanceof IWorkbenchAdapter)
			return ((IWorkbenchAdapter) obj).getLabel(obj);
		
		if(obj instanceof IMarker)
			 Util.getProperty(IMarker.MESSAGE, (IMarker) obj); 
		
		return NLS.bind(MarkerMessages.FieldMessage_WrongType,obj.toString());