[iagno] Require GTK+ 3.12, Vala 0.24

[Michael Catanzaro <mcatanzaro src gnome org>]

commit a13bc17a64d1ef921078d0ecb4f83d8f417b5388
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Apr 6 18:31:45 2014 -0500

    Require GTK+ 3.12, Vala 0.24
    
    For GtkDialog use_header_bar

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 9e88983..1dd4688 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([0.22])
+AM_PROG_VALAC([0.24])
 AM_PROG_CC_C_O
 
 GLIB_GSETTINGS
@@ -16,7 +16,7 @@ dnl Dependencies
 dnl ###########################################################################
 
 GLIB_REQUIRED=2.36.0
-GTK_REQUIRED=3.10
+GTK_REQUIRED=3.12
 RSVG_REQUIRED=2.32.0
 CANBERRA_GTK_REQUIRED=0.26