dtc: Add support for binary includes.

[Scott Wood]

On Wed, Jun 11, 2008 at 11:58:39AM +1000, David Gibson wrote:
> Scott's original patch does still have some implementation details I
> didn't like.  So in the interests of saving time, I've addressed some
> of those, added a testcase, and and now resubmitting my revised
> version of Scott's patch.

Acked-by: Scott Wood <scottwood at freescale.com>

> -struct data data_copy_file(FILE *f, size_t len)
> +struct data data_copy_file(FILE *f, size_t maxlen)
>  {
> -	struct data d;
> +	struct data d = empty_data;
> +
> +	while (!feof(f) && (d.len < maxlen)) {
> +		size_t chunksize, ret;
> +
> +		if (maxlen == -1)
> +			chunksize = 4096;
> +		else
> +			chunksize = maxlen - d.len;
> +
> +		d = data_grow_for(d, chunksize);
> +		ret = fread(d.val + d.len, 1, chunksize, f);
> +
> +		if (ferror(f))
> +			die("Error reading file into data: %s", strerror(errno));

It'd be nice if we could keep the filename around for reporting here...

-Scott