Unnecessary warning message when using RotationAnimation.

When RotationAnimation is used without specifying property or properties message 'QML RotationAnimation: Cannot animate non-existent property "angle"' is printed out to Application Output in QtCreator even though animation works just fine. This is because by default RotationAnimation tries to rotate all properties named "rotation" or "angle" and if only one of those exists, the warning message is printed out. RotationAnimation should be made to suppress warnings if at least one property for rotation is found in the target item.

import QtQuick 2.0

Rectangle {
    width: 400
    height: 200

    Rectangle {
        id: rect
        color: "red"
        width: 40
        height: 20
        anchors.centerIn: parent

        RotationAnimation {
            target: rect
    //        property: "rotation"
            from: 0
            to: 360
            running: true
            duration: 1000
            loops: Animation.Infinite
        }
    }
}