Rename QDeclarativeNdefRecord -> QQmlNdefRecord

The QDeclarative* class prefix is associated with the now-deprecated
Qt Declarative module (a.k.a. Qt Quick 1). In Qt Quick 2, all
QDeclarative* classes have been renamed to QQml* or QQuick*

Also rename the example, QDeclarativeNdefFooRecord -> QQmlNdefFooRecord

Change-Id: Ie81a9ea2fdda145ad749afb07ef758f791b278d0
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>