pkix warranty comment

[hardie@qualcomm.com]

When present, the terms and conditions pointer provides a reference to
  a document containing the terms and conditions associated with the
  warranty.  The document may be a Certificate Policy that contains this
  information, or it may be a document specifically about the warranty.
  It may also be a Relying Party Agreement.  The pointer is always a
  uniform resource locator (URL). The URL MUST be a non-relative URL,
  and it MUST follow the URL syntax and encoding rules specified in
  RFC 1738 [URL].

****>>I Think they should point to URI, 2636, and the "non-relative URL"
indicates that they presume this is a dereferencable document.  There
are many URIs which are not which might be sensible here which are
not dereferencable.