qdoc doesn't report a correct link to a QML component/element 's base class

For example, Item inherits QtObject, but this isn't shown on the Item reference page. Also, A QML element in QtQuick 1 will have an inherits link that points to the disambiguation page for its QML base class, but this is unnecessary since there is enough information to point directly to the correct class. And QML components parsed by the QML parser also don't report the inherits link correctly.