[clutter-gst] build: add support for automake 1.13

[Damien Lespiau <dlespiau src gnome org>]

commit a18069ab3e1aa0d4365adae68db0e78e24ae384b
Author: Nuno Araujo <nuno araujo russo79 com>
Date:   Tue Jan 15 23:59:28 2013 +0100

    build: add support for automake 1.13
    
    In Automake 1.13, the long-deprecated macro AM_CONFIG_HEADER (deprecated
    since 2002) has been removed in favour of AC_CONFIG_HEADERS.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 3f544d7..e4c2223 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,7 @@ AC_INIT([clutter-gst], [clutter_gst_version],
 AC_CONFIG_MACRO_DIR([build/autotools])
 AC_CONFIG_AUX_DIR([build/autotools])
 AC_CONFIG_SRCDIR([clutter-gst/clutter-gst.h])
-AM_CONFIG_HEADER([config.h])
+AC_CONFIG_HEADERS([config.h])
 
 AM_INIT_AUTOMAKE([1.9 -Wno-portability foreign no-dist-gzip dist-xz tar-ustar])