Cope with branches that don't have tags `version.sh` used to return only the hash of the last commit, causing VERSION_MAJOR to possibly contain non-numeric junk.
Cope with branches that don't have tags
`version.sh` used to return only the hash of the last commit, causing
VERSION_MAJOR to possibly contain non-numeric junk.

angt/glorytun,jedisct1/glorytun,jedisct1/glorytun,angt/glorytun