Comments of XLIFF 2.1 Draft

Hi David, everyone,

I've spent some time looking at a few new/modified sections of the XLIFF 2.1 draft (not the all draft) that is available here:
http://tools.oasis-open.org/version-control/browse/wsvn/xliff/trunk/xliff-21/xliff-core-v2.1.pdf and came up with a few comments.

They are in the attached PDF file.

Cheers,
-yves