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
}
							descriptorsChanged = true;
							break;
						}
					}
					break;
				}
			}
			return descriptorsChanged ? null : reference.eContainer();
		}
		if (reference instanceof MTrimBar) {
			EMap<EObject, EList<FeatureChange>> objectChanges = changeDescription
					.getObjectChanges();
			boolean trimBarsChanged = false;
			for (Entry<EObject, EList<FeatureChange>> entry : objectChanges.entrySet()) {
				EObject key = entry.getKey();
				if (key instanceof MTrimmedWindow) {
					for (FeatureChange change : entry.getValue()) {
						if (change.getFeatureName().equals(TRIMMEDWINDOW_TRIMBARS_ATTNAME)) {
							List<?> trimBars = (List<?>) change.getValue();
							for (Object trimBar : trimBars) {
								if (trimBar == reference) {
									return key;
								}
							}
							trimBarsChanged = true;
							break;
						}
					}
					break;