Revised wording for Issue 94

[ashok malhotra <ashok.malhotra@oracle.com>]

I added subelement extensibility for both <PolicySetAttachment> and 
<requires> as discussed on the call
today.  To allow subelement extensibility for <requires> I had to change 
the structure from simple content
to complex content.  Please take a look at the Appendix.
-- 
All the best, Ashok

sca-policy-1.1-spec-cd02-rev4-Issue94_mje_dab-am.doc