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
* Get the id of the marker field in treeColumn.
	 * 
	 * @param treeColumn
	 * @return String
	 */
	private String getFieldId(TreeColumn treeColumn) {
		return ((MarkerField) treeColumn.getData(MARKER_FIELD))
				.getConfigurationElement().getAttribute(
						MarkerSupportInternalUtilities.ATTRIBUTE_ID);
	}
	/**
	 * Return the ids of the generators specified for the receiver.
	 * 
	 * @return String[]
	 */
	String[] getGeneratorIds() {
		return defaultGeneratorIds;
	}
	/**
	 * Return the listener that updates sort values on selection.
	 * 
	 * @return SelectionListener
	 */
	private SelectionListener getHeaderListener() {
		return new SelectionAdapter() {
			/**
			 * Handles the case of user selecting the header area.
			 */
			public void widgetSelected(SelectionEvent e) {
				final TreeColumn column = (TreeColumn) e.widget;