First draft of UBL 2.1 PRD2 package

[Jon Bosak <bosak@pinax.com>]

Hello UBL TC,

I have uploaded an initial draft of the UBL 2.1 PRD2 package here:

http://www.oasis-open.org/apps/org/workgroup/ubl/document.php?document_id=42253

The only thing still missing from the current PRD2 package list is the
ASN.1 specification, so this version can be considered complete as far
as content is concerned.  Please review it carefully and (if you are a
contributor) please check to make sure that everything related to your
contribution is correctly described.

Jon