Bug 317954 Version deltas file so that incompatible changes will be ignored
The deltas file needs to be versioned so that incompatible changes will be discarded allowing the workbench to be constructed as if there were no deltas in existence.
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/XMLModelReconciler.java
}
			boolean newElement = false;
			for (Entry<EObject, EList<FeatureChange>> entry : objectChanges.entrySet()) {
				EObject key = entry.getKey();
				if (key == reference.eContainer()) {
					for (FeatureChange change : entry.getValue()) {
						if (change.getFeatureName().equals(ELEMENTCONTAINER_CHILDREN_ATTNAME)) {
							EList<?> value = (EList<?>) change.getValue();
							if (value.contains(reference)) {
								return key;
							}
							newElement = true;
							break;
						} else if (change.getFeatureName().equals(PART_TOOLBAR_ATTNAME)) {
							if (reference.equals(change.getValue())) {
								return key;
							}
							newElement = true;
							break;
						} else if (change.getFeatureName().equals(WINDOW_SHAREDELEMENTS_ATTNAME)) {
							EList<?> value = (EList<?>) change.getValue();
							if (value.contains(reference)) {
								return key;
							}
							newElement = true;
							break;
						} else if (change.getFeatureName().equals(PERSPECTIVE_WINDOWS_ATTNAME)) {
							EList<?> value = (EList<?>) change.getValue();
							if (value.contains(reference)) {
								return key;