Fix "multiple definition of" errors
https://github.com/SawfishWM/sawfish/commit/d4364707a58d335dab4d6ca11b761fd91ef2434d

Index: src/sawfish_subrs.h
--- src/sawfish_subrs.h.orig
+++ src/sawfish_subrs.h
@@ -79,7 +79,7 @@ extern void (*event_handlers[LASTEvent])(XEvent *ev);
 extern Time last_event_time;
 extern XEvent *current_x_event;
 extern repv Qvisibility_notify_hook, Qdestroy_notify_hook, Qmap_notify_hook,
-    Qunmap_notify_hook, Qreparent_notify_hook, Qenter_notify_hook,
+    Qunmap_notify_hook, Qreparent_notify_hook, Qenter_notify_hook, Qroot,
     Qleave_notify_hook, Qfocus_in_hook, Qfocus_out_hook, Qclient_message_hook,
     Qwindow_moved_hook, Qwindow_resized_hook, Qrandr_change_notify_hook;
 extern repv Qiconify_window, Quniconify_window;
@@ -158,7 +158,7 @@ extern void frames_init (void);
 extern void frames_kill (void);
 
 /* from functions.c */
-extern repv Qroot, Qafter_restacking_hook, Qposition, Qspacing;
+extern repv Qafter_restacking_hook, Qposition, Qspacing;
 extern repv Fdelete_window (repv win);
 extern repv Fdestroy_window (repv win);
 extern repv Frestack_windows (repv list);