[xliff] FYI: Relax NG becomes ISO draft

[Yves Savourel <ysavourel@translate.com>]

FYI, (from the last Relax NG TC meeting minutes):

-----
1. RELAX NG becomes an ISO DIS. James explained that RELAX NG was approved
yesterday as a Draft International Standard (DIS) at a meeting of ISO/IEC
JTC 1/SC34 in Buffalo, NY. This DIS is part 2 of a larger effort, Document
Schema Definition Languages (DSDL), which is being prepared by SC34. The
document, ISO/IEC DIS 19757-2, is available in PDF format at:
<http://www.y12.doe.gov/sgml/sc34/document/0320_files/relaxng-is.pdf>.
-----

It doesn't mean the industry will end up adopting it widely (vs. XML
Schema), but we should probably watch how this develops.

-ys