[libgames-support] Bump Gtk+ required version to 3.19.2.

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 19d8abbda7ca60df871a46cfe1f130fe0cb0adf9
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Mar 21 11:37:07 2016 +0100

    Bump Gtk+ required version to 3.19.2.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763946

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 35bd368..2ec4c9a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,7 +34,7 @@ LT_INIT([disable-static])
 PKG_CHECK_MODULES([LIBGAMES_SUPPORT], [
   glib-2.0 >= 2.40
   gio-2.0 >= 2.40
-  gtk+-3.0 >= 3.12
+  gtk+-3.0 >= 3.19.2
   gee-0.8
 ])