[PATCH libXfont] config: replace obsolete AM_CONFIG_HEADER with AC_CONFIG_HEADERS

[Dan Nicholson]

On Tue, Mar 30, 2010 at 6:32 AM, Gaetan Nadon <memsize at videotron.ca> wrote:
> Both headers end up created by the same macro.
>
> Signed-off-by: Gaetan Nadon <memsize at videotron.ca>

Reviewed-by: Dan Nicholson <dbn.lists at gmail.com>