From: Simon McVittie <simon.mcvittie@collabora.co.uk>
Date: Thu, 7 Apr 2011 13:12:02 +0100
Subject: [PATCH 2/7] re-word description of arg0namespace
It's unclear at first reading whether "may contain only one element"
means "elements >= 1, as an exception to the usual rule that
elements >= 2" (which is what was intended), or "elements == 1".
"Like a bus name or interface name" is a little ambiguous because they
have different syntactic restrictions: specifically allow any valid bus
name, which also allows all interface names.