Remove use of _GET_PRIVATE macro in NbtkWidget
Remove use of _GET_PRIVATE macro in NbtkWidget

pwithnall/mx,pwithnall/mx,pwithnall/mx,clutter-project/mx,jonnylamb/mx,jonnylamb/mx,pwithnall/mx,jonnylamb/mx,clutter-project/mx,jonnylamb/mx,clutter-project/mx,clutter-project/mx