Supporting MSVC2010 in ktexteditor framework

[Kai Uwe Broulik]

> > > - initializer lists
> > Unsupported on VS2012.
>
> Again, seems to be that CTP thingie, damn. (though, again, the initializer 
> lists should also be tested - maybe they also work if the number of arguments 
> is less than ...)

I've had problems with them even on VS2013, like return QHash<int, QByteArray>({ {FooRole, "foo} });
For QAbstractListModel::roleNames() which worked fine in recent clang and gcc.