As this header no longer exists this was causing a compilation error.
In the GTK version they are of course never needed, and the draw.c
that is also part of an Xaw build also does not call any function to
draw on an Xaw surface directly.
#include <stdio.h>
#include <math.h>
#include <cairo/cairo.h>
-#include <cairo/cairo-xlib.h>
#include <librsvg/rsvg.h>
#include <librsvg/rsvg-cairo.h>
#include <pango/pangocairo.h>
#include <pwd.h>
#include <math.h>
#include <cairo/cairo.h>
-#include <cairo/cairo-xlib.h>
#include <gtk/gtk.h>
#if !OMIT_SOCKETS
#include <stdint.h>
#include <cairo/cairo.h>
-#include <cairo/cairo-xlib.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#ifdef OSXAPP