Bug 213486 [Markers] view descriptions wrong when grouped
I20071218-0800. When grouped the view says 'Filter matches 100 of xyz items' but below you see that there are many more items shown as the marker filter is applied per group.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/ExtendedMarkersView.java
* @param allMarkers
	 */
	private void addAllConcreteItems(MarkerItem markerItem,
			Collection allMarkers) {
		if (markerItem.isConcrete()) {
			allMarkers.add(markerItem);
			return;
		}
		MarkerItem[] children = markerItem.getChildren();
		for (int i = 0; i < children.length; i++) {
			addAllConcreteItems(children[i], allMarkers);
		}
	}
	/**
	 * Add the category to the list of expanded categories.
	 * 
	 * @param category
	 */
	void addExpandedCategory(MarkerCategory category) {
		categoriesToExpand.add(category.getName());
	}
	/**
	 * Add all of the markers in markerItem recursively.
	 * 
	 * @param markerItem
	 * @param allMarkers
	 *            {@link Collection} of {@link IMarker}
	 */
	private void addMarkers(MarkerItem markerItem, Collection allMarkers) {
		if (markerItem.getMarker() != null)