added dojo/Stateful dependency to dijit/_Widget, !strict refs #11869
added dojo/Stateful dependency to dijit/_Widget, !strict refs #11869

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@23046 560b804f-0ae3-0310-86f3-f6aa0a117693

Sam-Cummins/delite,kitsonk/delite,harbalk/delite,harbalk/delite,kitsonk/delite,Sam-Cummins/delite