[gnome-tetravex] Bump required Gtk version to 3.13.4

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 369f4dec1411dbad5032c6927868766f19dc890f
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Tue Sep 9 06:00:20 2014 +0200

    Bump required Gtk version to 3.13.4
    
    https://bugzilla.gnome.org/show_bug.cgi?id=736305

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index d0e7f65..e8087aa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -16,7 +16,7 @@ dnl Dependencies
 dnl ###########################################################################
 
 GLIB_REQUIRED=2.40.0
-GTK_REQUIRED=3.13.2
+GTK_REQUIRED=3.13.4
 
 PKG_CHECK_MODULES(GNOME_TETRAVEX, [
   gio-2.0 >= $GLIB_REQUIRED