event: Use gunichar when dealing with unicode characters

This makes introspection return the keycode as a string, rather
than an integer.

https://bugzilla.gnome.org/show_bug.cgi?id=695188

clutter/clutter-event.c

@@ -837,7 +837,7 @@ clutter_event_set_key_code (ClutterEvent *event,
  *
  * Return value: The unicode value representing the key
  */
-guint32
+gunichar
 clutter_event_get_key_unicode (const ClutterEvent *event)
 {
   g_return_val_if_fail (event != NULL, 0);
@@ -862,7 +862,7 @@ clutter_event_get_key_unicode (const ClutterEvent *event)
  */
 void
 clutter_event_set_key_unicode (ClutterEvent *event,
-                               guint32       key_unicode)
+                               gunichar      key_unicode)
 {
   g_return_if_fail (event != NULL);
   g_return_if_fail (event->type == CLUTTER_KEY_PRESS ||

clutter/clutter-event.h

@@ -470,8 +470,8 @@ void                    clutter_event_set_key_code              (ClutterEvent
                                                                  guint16                 key_code);
 guint16                 clutter_event_get_key_code              (const ClutterEvent     *event);
 void                    clutter_event_set_key_unicode           (ClutterEvent           *event,
-                                                                 guint32                 key_unicode);
-guint32                 clutter_event_get_key_unicode           (const ClutterEvent     *event);
+                                                                 gunichar                key_unicode);
+gunichar                clutter_event_get_key_unicode           (const ClutterEvent     *event);
 
 void                    clutter_event_set_button                (ClutterEvent           *event,
                                                                  guint32                 button);