gdkx.h is x11 only
gdkx.h is x11 only

https://bugzilla.gnome.org/show_bug.cgi?id=598925

Signed-off-by: Emmanuele Bassi <049ee2061f71220e5aaf33f5be422fc2a2b06a44@gnome.org>

GNOME/unique,Distrotech/libunique,GNOME/unique,Distrotech/libunique,GNOME/unique,Distrotech/libunique