Bug 203838 [Markers] [Markers] clicking on column headers does not sort table
I20070918 Clicking on any of the column headers does not sort based on the relevant column.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/MarkerState.java
private IMemento memento;
	/**
	 * Create a new instance of the receiver from the supplied memento.
	 * 
	 * @param memento
	 */
	public MarkerState(IMemento memento) {
		this.memento = memento;
	}
	/**
	 * Return whether or not the receiver was the primary sort field.
	 * 
	 * @param markerField
	 * @return
	 */
	public boolean isPrimarySortField(MarkerField markerField) {
		
		return markerField instanceof MarkerDescriptionAndMessageField;
	}
	/**
	 * Return whether or not we are set to the default.
	 * @return