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
return UiPackageImpl.eINSTANCE.getElementContainer_SelectedElement();
		} else if (featureName.equals(COMMAND_COMMANDNAME_ATTNAME)) {
			return CommandsPackageImpl.eINSTANCE.getCommand_CommandName();
		} else if (featureName.equals(COMMAND_DESCRIPTION_ATTNAME)) {
			return CommandsPackageImpl.eINSTANCE.getCommand_Description();
		} else if (featureName.equals(KEYSEQUENCE_KEYSEQUENCE_ATTNAME)) {
			return CommandsPackageImpl.eINSTANCE.getKeySequence_KeySequence();
		} else if (featureName.equals(BINDINGCONTAINER_BINDINGTABLES_ATTNAME)) {
			return CommandsPackageImpl.eINSTANCE.getBindingTableContainer_BindingTables();
		} else if (featureName.equals(BINDINGCONTAINER_ROOTCONTEXT_ATTNAME)) {
			return CommandsPackageImpl.eINSTANCE.getBindingTableContainer_RootContext();
		} else if (featureName.equals(BINDINGTABLES_BINDINGS_ATTNAME)) {
			return CommandsPackageImpl.eINSTANCE.getBindingTable_Bindings();
		} else if (featureName.equals(BINDINGTABLES_BINDINGCONTEXTID_ATTNAME)) {
			return CommandsPackageImpl.eINSTANCE.getBindingTable_BindingContextId();
		} else if (featureName.equals(HANDLER_COMMAND_ATTNAME)
				|| featureName.equals(KEYBINDING_COMMAND_ATTNAME)
				|| featureName.equals(HANDLEDITEM_COMMAND_ATTNAME)) {
			
			if (object instanceof MKeyBinding) {
				return CommandsPackageImpl.eINSTANCE.getKeyBinding_Command();
			} else if (object instanceof MHandler) {
				return CommandsPackageImpl.eINSTANCE.getHandler_Command();
			}
			return MenuPackageImpl.eINSTANCE.getHandledItem_Command();
		} else if (featureName.equals(COMMAND_PARAMETERS_ATTNAME)
				|| featureName.equals(HANDLEDITEM_PARAMETERS_ATTNAME)) {
			
			if (object instanceof MHandledItem) {
				return MenuPackageImpl.eINSTANCE.getHandledItem_Parameters();