[gnome-robots] Require GTK+ 3.12

[Michael Catanzaro <mcatanzaro src gnome org>]

commit d743bf7f4359ffdb76c8365a32256fdebf2c5905
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun May 11 18:46:28 2014 -0500

    Require GTK+ 3.12
    
    For GTK_DIALOG_USE_HEADER_BAR

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 19f1754..fbbcc18 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,7 @@ dnl ###########################################################################
 dnl Dependencies
 dnl ###########################################################################
 
-GTK_REQUIRED=3.4.0
+GTK_REQUIRED=3.12.0
 RSVG_REQUIRED=2.32.0
 CANBERRA_GTK_REQUIRED=0.26