CD-1 issue #22: profile identifier

(try to connect to right thread, started at [1])

I propose "...:repeated-attributes-categories", as being more precise
and descriptive than "multiple-resource-elements".

See also thread starting at [2].

--Paul

[1] http://lists.oasis-open.org/archives/xacml/200909/msg00028.html
[2] http://lists.oasis-open.org/archives/xacml/200910/msg00022.html