o MDB: http://highlandsun.com/hyc/mdb/
  source : from OpenLDAP git repository
  commit : 7333b6bdc90c49c332d4728c62c7904e64c95077
  license: OpenLDAP Public License

o UTHash: http://uthash.sourceforge.net/
  version: 1.9.6
  license: BSD revised