Bug 315281 update copyrights for 3.6
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/databinding/viewers/ObservableValueEditingSupport.java
ColumnViewerEditorActivationListener {
		public void afterEditorActivated(ColumnViewerEditorActivationEvent event) {
			
		}
		public void afterEditorDeactivated(
				ColumnViewerEditorDeactivationEvent event) {
			editingState.dispose();
			editingState = null;
			viewer.getColumnViewerEditor().removeEditorActivationListener(this);
		}
		public void beforeEditorActivated(
				ColumnViewerEditorActivationEvent event) {
			
		}
		public void beforeEditorDeactivated(
				ColumnViewerEditorDeactivationEvent event) {
			
		}
	}
	/**
	 * Maintains references to objects that only live for the length of the edit
	 * cycle.
	 */
	private static class EditingState {