[gnome-mahjongg] Require GTK+ 3.12 and Vala 0.24

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 2bff02bec711316e618dc41cd495c179f9d5ae26
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun May 11 17:14:21 2014 -0500

    Require GTK+ 3.12 and Vala 0.24
    
    For Gtk.DialogFlags.USE_HEADER_BAR

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 109fab6..517498f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,7 +6,7 @@ AM_SILENT_RULES([yes])
 AM_MAINTAINER_MODE
 GNOME_MAINTAINER_MODE_DEFINES
 
-AM_PROG_VALAC([0.16.0])
+AM_PROG_VALAC([0.24.0])
 AM_PROG_CC_C_O
 
 GLIB_GSETTINGS
@@ -15,7 +15,7 @@ dnl ###########################################################################
 dnl Dependencies
 dnl ###########################################################################
 
-GTK_REQUIRED=3.10.0
+GTK_REQUIRED=3.12.0
 RSVG_REQUIRED=2.32.0
 
 PKG_CHECK_MODULES(GNOME_MAHJONGG, [