Bug 339347 [Markers] Can't toggle item limits in Problems view any more without losing limit
I20110308-2000 I can't toggle item limits in Problems view any more without losing limits. After I've disabled the limits, the next time I enable limits, the value is "1". The stored value should not be changed.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
if (markerCategories != null) {
						for (int i = 0; i < markerCategories.length; i++) {
							for (int j = 0; j < mementoCategories.length; j++) {
								if (markerCategories[i].getName().equals(
										mementoCategories[j].getID()))
									categoriesToExpand.add(markerCategories[i]
											.getName());
							}
						}
					}
				}
			}
		}
		return categoriesToExpand;
	}
	/**
	 * Return the group used for categorisation.
	 * 
	 * @return MarkerGroup
	 */
	MarkerGroup getCategoryGroup() {
		return builder.getCategoryGroup();
	}
	/**
	 * Return the clipboard for the receiver.
	 * 
	 * @return Clipboard
	 */
	Clipboard getClipboard() {
		if (clipboard == null)