[gtkmm] Regenerate gtk_signals.defs

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 6a3a17fc01b30dd0924eb54e58aebf2ccaca9619
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Mon Aug 14 10:01:16 2017 +0200

    Regenerate gtk_signals.defs
    
    CenterBox has been added, EventBox has been removed.

 gtk/src/gtk_signals.defs |   31 +++++++++++--------------------
 1 files changed, 11 insertions(+), 20 deletions(-)
---
diff --git a/gtk/src/gtk_signals.defs b/gtk/src/gtk_signals.defs
index b9a728d..5de5292 100644
--- a/gtk/src/gtk_signals.defs
+++ b/gtk/src/gtk_signals.defs
@@ -2052,6 +2052,17 @@
   (construct-only #f)
 )
 
+;; From GtkCenterBox
+
+(define-property baseline-position
+  (of-object "GtkCenterBox")
+  (prop-type "GParamEnum")
+  (docs "The position of the baseline aligned widgets if extra space is available")
+  (readable #t)
+  (writable #t)
+  (construct-only #f)
+)
+
 ;; From GtkClipboard
 
 (define-signal owner-change
@@ -3159,26 +3170,6 @@
   (construct-only #f)
 )
 
-;; From GtkEventBox
-
-(define-property visible-window
-  (of-object "GtkEventBox")
-  (prop-type "GParamBoolean")
-  (docs "Whether the event box is visible, as opposed to invisible and only used to trap events.")
-  (readable #t)
-  (writable #t)
-  (construct-only #f)
-)
-
-(define-property above-child
-  (of-object "GtkEventBox")
-  (prop-type "GParamBoolean")
-  (docs "Whether the event-trapping window of the eventbox is above the window of the child widget as 
opposed to below it.")
-  (readable #t)
-  (writable #t)
-  (construct-only #f)
-)
-
 ;; From GtkEventController
 
 (define-property widget