Do not crash when resizing invisible (non-tracked) windows.

Change-Id: I776c21a0f675d2dbe831325cef2c1c2a103e03e5
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Allow for QtQml and QtDeclarative to co-exist at run-time

This patch changes QQmlData to share the very first bit with QDeclarativeData,
to indicate if the QObject in question is exposed in the QML1 or QML2 run-time.

Task-number: QTBUG-35006

Change-Id: I3aa1d7c99038792011afd9f481ad30d9b981721f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>