Rename gdkx11keys.h

The header is now private, so it should follow the same naming scheme
for private GDK-X11 headers.

gdk/x11/gdkdevicemanager-xi2.c

@@ -19,12 +19,12 @@
 
 #include "gdkx11devicemanager-xi2.h"
 #include "gdkx11device-xi2.h"
-#include "gdkx11keys.h"
 
 #include "gdkdeviceprivate.h"
 #include "gdkdevicetoolprivate.h"
 #include "gdkdisplayprivate.h"
 #include "gdkeventtranslator.h"
+#include "gdkkeys-x11.h"
 #include "gdkprivate-x11.h"
 #include "gdkdisplay-x11.h"
 #include "gdkintl.h"

gdk/x11/gdkdisplay-x11.c

@@ -26,7 +26,6 @@
 
 #include "gdkdisplay-x11.h"
 #include "gdkdisplayprivate.h"
-#include "gdkx11keys.h"
 
 #include "gdkasync.h"
 #include "gdkdisplay.h"
@@ -39,12 +38,15 @@
 #include "gdkkeysprivate.h"
 #include "gdkmarshalers.h"
 #include "xsettings-client.h"
+
+#include "gdkcairocontext-x11.h"
 #include "gdkclipboard-x11.h"
+#include "gdkglcontext-x11.h"
+#include "gdkkeys-x11.h"
 #include "gdkprivate-x11.h"
 #include "gdkscreen-x11.h"
-#include "gdkcairocontext-x11.h"
-#include "gdkglcontext-x11.h"
 #include "gdkvulkancontext-x11.h"
+
 #include "gdk-private.h"
 
 #include <glib.h>

gdk/x11/gdkkeys-x11.c

@@ -24,7 +24,8 @@
 
 #include "config.h"
 
-#include "gdkx11keys.h"
+#include "gdkkeys-x11.h"
+
 #include "gdkkeysprivate.h"
 #include "gdkkeysyms.h"
 #include "gdkprivate-x11.h"