Bug 71546 CVS decoration not updated for jars after a commit
When committing a jar that is in the classpath, the CVS decoration is not updated in the package view. The decoration is first updated when closing the package view an opening it again.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/viewsupport/ResourceToItemsMapper.java
public static interface IContentViewerAccessor {
		public void doUpdateItem(Widget item);
	}
	
	private static final int NUMBER_LIST_REUSE= 10;
	
	private HashMap fResourceToItem;