Bug 127289 [Markers] SystemFilter and group selection state not preserved
We are not preserving the selection state of the system filters or which group is selected.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/CategorySorter.java
*/
	public IField getCategoryField() {
		return categoryField;
	}
	/**
	 * Set the field that we are categorizing by.
	 * 
	 * @param field
	 */
	public void setCategoryField(IField field) {
		this.categoryField = field;
	}
	/**
	 * Set the inner sorter to the new sorter.
	 * 
	 * @param sorter2
	 */
	public void setTableSorter(TableSorter sorter2) {
		innerSorter = sorter2;
	}
	/**
	 * Save the state of the receiver.
	 * 
	 * @param dialogSettings
	 */
	public void saveState(IDialogSettings dialogSettings) {
		if (dialogSettings == null) {
			return;
		}
		IDialogSettings settings = dialogSettings