QQmlSettings: if debugging is turned on, show the path where stored
QQmlSettings: if debugging is turned on, show the path where stored

Being able to read the file as stored is useful for debugging.

Change-Id: Ifae8d2e1acc654d24efdbff2d2cb433f0e7d3f13
Reviewed-by: Frederik Gladhorn <bb2d0c2ba681c116a2d12cf46ffa528dd5dd064e@digia.com>

qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,qmlc/qtdeclarative,qmlc/qtdeclarative,qmlc/qtdeclarative,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,mgrunditz/qtdeclarative-2d