reference: pygtk-gtktoolitemgroup.xml: add purpose, interfaces, properties and signals + update methods
reference: pygtk-gtktoolitemgroup.xml: add purpose, interfaces, properties and signals + update methods

GNOME/pygtk,amremam2004/pygtk,Distrotech/pygtk,nzjrs/pygtk,Distrotech/pygtk,GNOME/pygtk,nzjrs/pygtk,amremam2004/pygtk,Distrotech/pygtk,nzjrs/pygtk,amremam2004/pygtk,GNOME/pygtk