Update of tagset draft

Hi all,

Just FYI:

I started the update of the tagset draft, with changes related to
abandoning the schemaRule element.

http://www.w3.org/International/its/itstagset/itstagset-diff-20060222.html
http://www.w3.org/International/its/itstagset/itstagset.html

The diff version visualizes change marks.

Cheers,

Felix