[rhythmbox] config: replace deprecated AM_CONFIG_HEADER with AC_CONFIG_HEADERS

[Jonathan Matthew <jmatthew src gnome org>]

commit 1168a55ba3b14c04d940ad4dacccc3eaa871f6d7
Author: Christoph Orsinger <c orsinger gmail com>
Date:   Sat Mar 9 12:34:54 2013 +0100

    config: replace deprecated AM_CONFIG_HEADER with AC_CONFIG_HEADERS
    
    AM_CONFIG_HEADER is depreciated since July 2002 and was subsequently removed from automake 1.13.
    To build with automake >= 1.13 AC_CONFIG_HEADERS is needed.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index a641799..3fb4232 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ AC_INIT([rhythmbox],
        [https://bugzilla.gnome.org/enter_bug.cgi?product=rhythmbox])
 AC_CONFIG_SRCDIR(rhythmbox.pc.in)
 AC_CONFIG_MACRO_DIR(macros)
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
 AM_INIT_AUTOMAKE([1.9 dist-xz no-dist-gzip])
 
 AC_SUBST(ACLOCAL_AMFLAGS, "-I macros")