QmlApp wizard: Bump version number

Make sure changes in 0a8c34d3 are applied to existing
.pro files too.

Reviewed-by: TrustMe

src/plugins/qt4projectmanager/wizards/qmlstandaloneapp.cpp

@@ -477,7 +477,7 @@ bool QmlStandaloneApp::updateFiles(const QList<QmlAppGeneratedFileInfo> &list, Q
     return true;
 }
 
-const int QmlStandaloneApp::StubVersion = 8;
+const int QmlStandaloneApp::StubVersion = 9;
 
 } // namespace Internal
 } // namespace Qt4ProjectManager