Libunique don't respect gtk+ single include

[Luca Ferretti <elle uca libero it>]

>From gnome-bluetooth build log

n file included
from /opt/gnome2/include/unique-1.0/unique/uniqueapp.h:27,
                 from main.c:33:
/opt/gnome2/include/gtk-2.0/gtk/gtkwindow.h:28:2: error: #error "Only
<gtk/gtk.h> can be included directly."

>From brasero build log

In file included
from /opt/gnome2/include/unique-1.0/unique/uniqueapp.h:27,
                 from /opt/gnome2/include/unique-1.0/unique/unique.h:24,
                 from brasero-app.c:38:
/opt/gnome2/include/gtk-2.0/gtk/gtkwindow.h:28:2: error: #error "Only
<gtk/gtk.h> can be included directly."
In file included
from /opt/gnome2/include/unique-1.0/unique/uniquebackend.h:26,
                 from /opt/gnome2/include/unique-1.0/unique/unique.h:25,
                 from brasero-app.c:38:
/opt/gnome2/include/gtk-2.0/gdk/gdkscreen.h:25:2: error: #error "Only
<gdk/gdk.h> can be included directly."

This for libunique 1.0.8, released on mar 22. The issue was fixed on git
master (at least it seems reading the log), but was never released.