[polari] build: Add a minimum GTK+ version

[Jasper St. Pierre <jstpierre src gnome org>]

commit fd742cdc21f577ebb77b349093de998b666a16d2
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Tue Sep 3 11:11:08 2013 -0400

    build: Add a minimum GTK+ version

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index c463072..0e758c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([polari],[0.0.1],[],[polari])
+cAC_INIT([polari],[0.0.1],[],[polari])
 
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
 
@@ -19,7 +19,7 @@ GLIB_GSETTINGS
 PKG_CHECK_MODULES(POLARI,
                   gio-2.0
                   gobject-introspection-1.0
-                  gtk+-3.0
+                  gtk+-3.0 >= 3.9.12
                   telepathy-glib);
 
 GJS_CONSOLE=`$PKG_CONFIG --variable=gjs_console gjs-1.0`