[PATCH] configure.ac: fix automake warnings reported with recent automake updates:

[Keng-Yü Lin]

On Mon, Jun 3, 2013 at 5:29 PM, Colin King <colin.king at canonical.com> wrote:
> From: Colin Ian King <colin.king at canonical.com>
>
> automake: warnings are treated as errors
> /usr/share/automake-1.13/am/ltlibrary.am: warning: 'libfwtsacpica.la': linking libtool libraries using a non-POSIX
> /usr/share/automake-1.13/am/ltlibrary.am: archiver requires 'AM_PROG_AR' in 'configure.ac'
>
> Signed-off-by: Colin Ian King <colin.king at canonical.com>
> ---
>  configure.ac | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/configure.ac b/configure.ac
> index 77d44bf..477c008 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -2,6 +2,7 @@
>            AM_INIT_AUTOMAKE([-Wall -Werror foreign])
>           AC_CANONICAL_HOST
>           AC_CONFIG_MACRO_DIR([m4])
> +         AM_PROG_AR
>            AC_PROG_CC
>           AC_PROG_LEX
>           AC_PROG_YACC
> --
> 1.8.1.2
>

I happened to make a (almost) duplicate patch as this one.
However this patch can make fwts built well on raring and quantal, so

Acked-by: Keng-Yu Lin <kengyu at canonical.com>