Bug 39746 Move super class constructor combo up.
Move the combo selection for the super class constructors to be above the field treeviewer for the "Create constructor using fields" source action.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/CreateNewConstructorAction.java
import org.eclipse.jdt.internal.ui.dialogs.SourceActionDialog;
import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
import org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor;
import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility;
import org.eclipse.jdt.internal.ui.preferences.JavaPreferencesSettings;
import org.eclipse.jdt.internal.ui.util.BusyIndicatorRunnableContext;
import org.eclipse.jdt.internal.ui.util.ElementValidator;
import org.eclipse.jdt.internal.ui.util.ExceptionHandler;
import org.eclipse.jdt.internal.ui.viewsupport.JavaElementLabels;
public class CreateNewConstructorAction extends SelectionDispatchAction {
	
	private CompilationUnitEditor fEditor;
	private static final String fDialogTitle= ActionMessages.getString("CreateNewConstructorAction.error.title"); 
	
	/**
	 * Creates a new <code>CreateNewConstructorAction</code>. The action requires
	 * that the selection provided by the site's selection provider is of type <code>
	 * org.eclipse.jface.viewers.IStructuredSelection</code>.
	 * 
	 * @param site the site providing context information for this action
	 */
	public CreateNewConstructorAction(IWorkbenchSite site) {
		super(site);
		setText(ActionMessages.getString("CreateNewConstructorAction.label")); 
		setDescription(ActionMessages.getString("CreateNewConstructorAction.description")); 
		setToolTipText(ActionMessages.getString("CreateNewConstructorAction.tooltip")); 
		
		WorkbenchHelp.setHelp(this, IJavaHelpContextIds.CREATE_NEW_CONSTRUCTOR_ACTION);
	}
	/**