Bug#844431: Packages should be reproducible

[Daniel Shahaf]

Chris Lamb wrote on Thu, Nov 17, 2016 at 12:30:44 +0100:
> +++ b/policy.sgml
> @@ -2503,6 +2503,20 @@ endif
> +      <sect id="readmesource">

Note that the id should be changed before applying, since there already
is a sect with this id value.