Bug 228760 [Markers] Column orientation not stored when markers views are closed
If we re-order view columns by drag and drop or add/remove them using the preferences the values we ended up with are not restored on restart.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
DragSourceListener listener = new DragSourceAdapter() {
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.swt.dnd.DragSourceAdapter#dragSetData(org.eclipse.swt.dnd.DragSourceEvent)
			 */
			public void dragSetData(DragSourceEvent event) {
				performDragSetData(event);
			}
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.swt.dnd.DragSourceAdapter#dragFinished(org.eclipse.swt.dnd.DragSourceEvent)
			 */
			public void dragFinished(DragSourceEvent event) {
			}
		};
		viewer.addDragSupport(operations, transferTypes, listener);
	}
	/**
	 * The user is attempting to drag marker data. Add the appropriate data to
	 * the event depending on the transfer type.
	 */
	private void performDragSetData(DragSourceEvent event) {
		if (MarkerTransfer.getInstance().isSupportedType(event.dataType)) {
			event.data = getSelectedMarkers();
			return;
		}
		if (TextTransfer.getInstance().isSupportedType(event.dataType)) {
			IMarker[] markers = getSelectedMarkers();