The upstream changelog is maintained as part of the git repository tags, and can be updated by writing the output of
	for t in $(git tag -l | sort -Vr); do git tag -ln999 $t | sed -E '/^ *\([[:xdigit:]]{40}\)$/d;s/\s*$//'; echo; done | head -n-1
inside an upstream checkout to d/changelog.upstream.

The upstream NEWS are maintained as release mails (as distributed via the mailing list), and should be appended to d/NEWS.upstream.
