[cheese] Depend on valac 0.18 for gstreamer-1.0

[Luciana Fujii Pontello <lufujii src gnome org>]

commit 1bc46630e38f1bc08c2cdce721b6b4fa769997e5
Author: Luciana Fujii Pontello <luciana fujii eti br>
Date:   Thu Mar 28 12:06:37 2013 +0100

    Depend on valac 0.18 for gstreamer-1.0
    
    gstreamer-1.0 vala bindings is only available on valac-0.18.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 61268cb..49f9354 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,7 +18,7 @@ AM_SILENT_RULES([yes])
 # Check for programs
 AC_PROG_CC
 AM_PROG_CC_C_O
-AM_PROG_VALAC([0.16.0])
+AM_PROG_VALAC([0.18.0])
 
 # Initialize libtool
 LT_PREREQ([2.2])