Add "make release" script

Makefile

@@ -48,6 +48,9 @@ clean:	clean-workhorse clean-build
 clean-workhorse:
 	cd ${BUILD_DIR} && rm -f gitlab-workhorse gitlab-zip-cat gitlab-zip-metadata
+release:
+	sh _support/release.sh
+
 .PHONY:	clean-build
 clean-build:
 	rm -rf ${BUILD_DIR}/_build

_support/release.sh

+set -e
+
+remotes='https://dev.gitlab.org/gitlab/gitlab-workhorse.git https://gitlab.com/gitlab-org/gitlab-workhorse.git'
+
+main() {
+  get_version
+  tag_name="v${version}"
+  git tag -m "Version ${version}" -a ${tag_name}
+  git show ${tag_name}
+  echo
+  echo "Does this look OK? Enter 'yes' to push to ${remotes}"
+  read confirmation
+  if [ "x${confirmation}" != xyes ] ; then
+    echo "Aborting"
+    exit 1
+  fi
+  for r in ${remotes}; do
+    git push "${r}" HEAD ${tag_name}
+  done
+}
+
+get_version() {
+  v=$(sed 1q VERSION)
+  if ! echo "${v}" | grep -q '^[0-9]\+\.[0-9]\+\.[0-9]\+$' ; then
+    echo "Invalid VERSION: ${v}"
+    exit 1
+  fi
+  version="${v}"
+}
+
+main
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