[gtk+] Add 'Since: 2.18' tag

[Javier Jardón <jjardon src gnome org>]

commit 674dd557e81f77d2a6fcf7a6e1b87c7ee369a6c6
Author: Javier Jardón <jjardon gnome org>
Date:   Thu Dec 17 19:17:22 2009 +0100

    Add 'Since: 2.18' tag
    
    Add missing 'Since:' tag in gdk_window_get_root_coords() and
    gdk_window_is_destroyed()
    
    Reported by Rafal Luzynski in
    https://bugzilla.gnome.org/show_bug.cgi?id=604821

 gdk/gdkwindow.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index cd7def8..31c0f08 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -2220,6 +2220,8 @@ gdk_window_get_window_type (GdkWindow *window)
  * Check to see if a window is destroyed..
  *
  * Return value: %TRUE if the window is destroyed
+ *
+ * Since: 2.18
  **/
 gboolean
 gdk_window_is_destroyed (GdkWindow *window)
@@ -8020,6 +8022,8 @@ gdk_window_get_origin (GdkWindow *window,
  * window coordinates. This is similar to
  * gdk_window_get_origin() but allows you go pass
  * in any position in the window, not just the origin.
+ *
+ * Since: 2.18
  */
 void
 gdk_window_get_root_coords (GdkWindow *window,