Add small helper script to keep lists sorted.

distrib/sets/sort-list

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+while [ $# != 0 ]; do
+	( grep '^#' $1; grep -v '^#' $1 | LC_ALL=C sort ) > $1.tmp
+	mv $1.tmp $1
+	shift
+done