Order of QObject children

See e.g. <http://stackoverflow.com/questions/1991684/order-of-qobject-children-strategy-question>

Some applications need a parent-child hierarchy with a defined and changeable order of children for any given parent. QObject has all this, except for the order to be changeable, QObject::children is a const QList.

The request is to expose manipulation of QObject::children to subclasses and clients.