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
* 
					 * @see org.eclipse.ui.views.tasklist.ITaskListResourceAdapter#getAffectedResource(org.eclipse.core.runtime.IAdaptable)
					 */
					public IResource getAffectedResource(IAdaptable adaptable) {
						Object resource = adaptable.getAdapter(IResource.class);
						if (resource == null)
							resource = adaptable.getAdapter(IFile.class);
						if (resource == null)
							return null;
						return (IResource) resource;
					}
				};
			}
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.ui.ISelectionListener#selectionChanged(org.eclipse.ui.IWorkbenchPart,
			 *      org.eclipse.jface.viewers.ISelection)
			 */
			public void selectionChanged(IWorkbenchPart part,
					ISelection selection) {
				
				
				if (part == ExtendedMarkersView.this
						|| !(getSite().getPage().isPartVisible(part)))
					return;
				List selectedElements = new ArrayList();
				if (part instanceof IEditorPart) {
					IEditorPart editor = (IEditorPart) part;
					IFile file = ResourceUtil.getFile(editor.getEditorInput());