[gnome-chess] Require vala 0.24

[Michael Catanzaro <mcatanzaro src gnome org>]

commit c811111c431ef377272e8ae0a272e1dd13fe0d49
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Sep 21 18:53:53 2014 -0500

    Require vala 0.24
    
    Maybe needed for set_accels_for_action. I don't care to look up what
    0.23 release that was added in.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=737046

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index a75de99..849fa0f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,7 +10,7 @@ AM_SILENT_RULES([yes])
 AM_MAINTAINER_MODE([enable])
 GNOME_MAINTAINER_MODE_DEFINES
 
-AM_PROG_VALAC([0.23.1.11])
+AM_PROG_VALAC([0.24])
 AM_PROG_CC_C_O
 
 LT_PREREQ([2.2])