Special case gboolean constant generation for GLib
Special case gboolean constant generation for GLib

We shouldn't qualify GTRUE/GFALSE with glib::

GuillaumeGomez/gir,gtk-rs/gir,GuillaumeGomez/gir,gtk-rs/gir,gtk-rs/gir,EPashkin/gir,GuillaumeGomez/gir,EPashkin/gir