Add release helper script.

prepare-release.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+set -e
+
+if [ $# -eq 0 ]; then
+	echo "usage: ${0##*/} tag [savepath]" >&2
+	exit 1
+fi
+
+tag=$1; shift
+if ! echo "$tag" | egrep -q '^v[0-9]+\.[0-9]+\.[0-9]+$'; then
+	echo "invalid tag name, must be like v1.2.3" >&2
+	exit 1
+fi
+
+arc_path=/tmp
+if [ $# -gt 0 ]; then
+	arc_path=$1; shift
+fi
+
+v=${tag#v}
+arc_name=oicb-${v}.tar.gz
+
+if git tag | fgrep -qx "$tag"; then
+	echo "tag $tag is already there, skipping it's creation"
+else
+	git tag "$tag"
+	git push origin "$tag"
+fi
+
+pax -wzv \
+	-s ',^\./.git\(/.*\)*$,,' \
+	-s ',^\./obj\(/.*\)*$,,' \
+	-s ',^\./build.*,,' \
+	-s "/^./oicb-${v}/" \
+	. >"$arc_path/$arc_name"
+echo "archive saved to $arc_path/$arc_name"