Fix includes

gtkbubblewindow.h was including gtk.h, which in turn included
gtkselectionwindow.h, leading to build failure.

gtk/gtkbubblewindow.c

@@ -40,6 +40,8 @@
 #include <gdk/gdk.h>
 #include <cairo-gobject.h>
 #include "gtkbubblewindow.h"
+#include "gtktypebuiltins.h"
+#include "gtkmain.h"
 #include "gtkprivate.h"
 #include "gtkintl.h"
 

gtk/gtkbubblewindow.h

@@ -22,7 +22,7 @@
 #error "Only <gtk/gtk.h> can be included directly."
 #endif
 
-#include <gtk/gtk.h>
+#include <gtk/gtkwindow.h>
 
 G_BEGIN_DECLS
 

gtk/gtkselectionwindow.c

@@ -28,6 +28,10 @@
 
 #include "config.h"
 #include "gtkselectionwindow.h"
+#include "gtkactiongroup.h"
+#include "gtkuimanager.h"
+#include "gtkclipboard.h"
+#include "gtktoolbar.h"
 #include "gtkprivate.h"
 #include "gtkintl.h"