Widget factory: Do not assume that existingConstructor is either base or undefined.
Widget factory: Do not assume that existingConstructor is either base or undefined.

arschmitz/jquery-mobile,hinaloe/jqm-demo-ja,arschmitz/uglymongrel-jquery-mobile,arschmitz/uglymongrel-jquery-mobile,hinaloe/jqm-demo-ja,arschmitz/jquery-mobile,arschmitz/uglymongrel-jquery-mobile,hinaloe/jqm-demo-ja,arschmitz/jquery-mobile