[RIF][UCR] Action 113

Hi all,

I stole Allen's "update XML types" action from today's telecon
(http://www.w3.org/2005/rules/wg/track/actions/113):

http://www.w3.org/2005/rules/wg/wiki/UCR/Requirements#req-xml-types

Note that I left the link back the charter in and DaveR said he was
fine with this.

David