Issue 3711 - wsp:PolicyReference can be used in any place where you can use wsp:Policy

> http://www.w3.org/Bugs/Public/show_bug.cgi?id=3712
> 
> Description:
> Policy Framework Spec, Section 4.3.4 considers the usage of wsp:PolicyReference
> within the wsp:Policy only, which is misleading/inconsistent with the Policy
> Attachment Spec where wsp:PolicyReference can be used standalone.
> 
> Proposal:
> Change Policy Spec §4.3.4 in a way, that:
> (a) Policy Attachment Spec is referred to from this place
> (b) drop <wsp:Policy> in the provided schema outline
> (c) drop /wsp:Policy/... from the XPath expressions below the schema outline
> 
> Best regards,
> Vladislav Bezrukov
> SAP AG