qtif: Add missing libintl.h include
qtif: Add missing libintl.h include

https://bugzilla.gnome.org/show_bug.cgi?id=666518

GNOME/gdk-pixbuf,YueLinHo/MB3Gdk-pixbuf,GNOME/gdk-pixbuf,YueLinHo/MB3Gdk-pixbuf,Distrotech/gdk-pixbuf,Distrotech/gdk-pixbuf,GNOME/gdk-pixbuf,djdeath/gdk-pixbuf,djdeath/gdk-pixbuf,Distrotech/gdk-pixbuf,djdeath/gdk-pixbuf,djdeath/gdk-pixbuf,GNOME/gdk-pixbuf,YueLinHo/MB3Gdk-pixbuf,YueLinHo/MB3Gdk-pixbuf,Distrotech/gdk-pixbuf,YueLinHo/MB3Gdk-pixbuf,Distrotech/gdk-pixbuf