# Check validity of version number
# Expected are: YYYYMMDD, YYYYMMDD.x, YYYYMMDD<suite>x, YYYYMMDD+<suite>x,
# YYYYMMDD+debXuZ and the +b[0-9] on the end
# Check validity of version number
# Expected are: YYYYMMDD, YYYYMMDD.x, YYYYMMDD<suite>x, YYYYMMDD+<suite>x,
# YYYYMMDD+debXuZ and the +b[0-9] on the end