[xacml] [Text Change] Clarify A.3 Structured types does not cast orconvert values

CHANGE REQUEST:
In Section A.3 Structured types, item 1., paragraph starting with
"1, change second sentence from:

  "This requires the structured data, including its tags and
   attributes, to be identified and treated as an instance of the
   data-type xsi:string."

To:

  "This requires the structured data <AttributeValue> to be given the 
   DataType="xsi:string".  For example, a structured data type
   that is actually a ds:KeyInfo/KeyName would appear in the
   Context as:

   <AttributeValue
     DataType="xsi:string"><ds:KeyName>jhibbert-key</ds:KeyName></AttributeValue>

RATIONALE: Way#1 could be read as implying that the structured
data type is automatically cast or converted to the type required
by the function that references it.  We should be very clear that
this does NOT occur.

Anne
-- 
Anne H. Anderson             Email: 
Sun Microsystems Laboratories
1 Network Drive,UBUR02-311     Tel: 781/442-0928
Burlington, MA 01803-0902 USA  Fax: 781/442-1692