[xacml] AA25: editorial: A.3 add reference to [IBMSDA"

Text location: Section A.3 Representations

Text change: replace "XACML SHALL use the conversions described
in IBM Standard Decimal Arithmetic document at the following URL:
http://www2.hursley.ibm.com/decimal/decarith.html" with

"XACML SHALL use the conversions described in IBM Standard
Decimal Arithmetic [IBMSDA]."

Rationale: put the details in one place, the References section.
See also AA10: editorial: Add reference [IBMSDA] to references.

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