[epiphany] Require GTK 3.9.12

[Adam Dingle <adamd src gnome org>]

commit db42abbd1bc665d428787816b58aa49928454aff
Author: Adam Dingle <adam yorba org>
Date:   Mon Sep 2 04:00:58 2013 -0400

    Require GTK 3.9.12
    
    We now use gtk_button_new_from_icon_name, first found in GTK 3.9.12.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index d30db63..fa64144 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,7 +66,7 @@ GNOME_CODE_COVERAGE
 MORE_WARN_FLAGS="-Wdeclaration-after-statement"
 
 GLIB_REQUIRED=2.35.6
-GTK_REQUIRED=3.7.10
+GTK_REQUIRED=3.9.12
 LIBXML_REQUIRED=2.6.12
 LIBXSLT_REQUIRED=1.1.7
 WEBKIT_GTK_REQUIRED=2.1.1