Start pulling instructions out of RELEASE_CHECKLIST into scripts in reltools/ to semi-automate some of the release process.

reltools/update_authors.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e -o pipefail
+
+RUNDIR=$(dirname "$0")
+TOP=${RUNDIR}/..
+. "${RUNDIR}/reltools.subr"
+
+update_authors()
+{
+	PREV=$(get_most_recent_reltag)
+	NEW_AUTHORS=$( git log -r ${PREV}..HEAD | grep Author: | sed -e's/Author: //' ; cat "${TOP}/AUTHORS" )
+	echo "${NEW_AUTHORS}" | sort -u > "${TOP}/AUTHORS"
+}