[glade] Bumped reqired gtk+ verstion to 3.19.12

[Juan Pablo Ugarte <jpu src gnome org>]

commit 6428646fda2e0061750ad8eecdff0374af1fffbe
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Mon Mar 14 23:25:56 2016 -0300

    Bumped reqired gtk+ verstion to 3.19.12

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index fe66af4..3b843d4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -145,7 +145,7 @@ GOBJECT_INTROSPECTION_CHECK([1.32.0])
 dnl ================================================================
 dnl Check for gtk+
 dnl ================================================================
-GTK_REQUIRED=3.16.0
+GTK_REQUIRED=3.19.12
 PKG_CHECK_MODULES([GTK],[
   gtk+-3.0 >= $GTK_REQUIRED
   gmodule-2.0