New: implemented attribute extension fallback property for qt components
New: implemented attribute extension fallback property for qt components

RevBy: Jan Arne Petersen
Details: QML elements cannot override inputMethodQuery() because
the QGraphicsItems are Qt internal. Provide this as fallback for now.

Full, original commit at 180c8df78f33df90ba6657e703f32318c931298b in maliit-framework

maliit/inputcontext-qt4,maliit/inputcontext-qt4,perencia/inputcontext-qt4