Update to Metadata Issue #1: Add $t Tag for Identifier Metadata

["Drummond Reed" <drummond.reed@cordance.net>]

Per the discussion in a previous thread
(http://lists.oasis-open.org/archives/xri/200509/msg00052.html), Metadata
Issue #1 had been renamed "Add $t Tag for Identifier Types".

Version 2.0 of the proposal page has been updated to propose adding a new
"$t" tag to the Metadata which would delegate to a separate XRI TC
specification, tentatively titled the "XRI Type Specification".

The full proposal page is at:

http://wiki.oasis-open.org/xri/Xri2Cd02/MetaData/I1IdentifierTypeSection

Please read this and then continue discussion on the list.

=Drummond