In http://article.gmane.org/gmane.comp.version-control.git/109790 I
threatened to announce a change to the default threading style used by
send-email to no-chain-reply-to (i.e. the second and subsequent messages
will all be replies to the first one), unless nobody objected, in 1.6.3.
Nobody objected, as far as I can dig the list archive. But when nothing
happened in 1.6.3 nor 1.6.4, nobody from the camp who complained loudly
that led to the message did not complain either.
So I am guessing that after all nobody cares about this. But 1.7.0 is a
good time to change this, and as I said in the message, I personally think
it is a good change, so here it is.