fixed units in sfcobs point data description
made getDescription() and static constants public in point data transform
fixed typo in udunits alias file
created new decoder for synop bufr obs
added decoder and dependencies to features
Former-commit-id: b35756921a0ba5ff240b80f92322da90345c6eaf
created a command line utility to generate translation table starters
added synoptic table mapped values to bufr translation tables
Former-commit-id: 7eb9def773f971d5dc0e43d8b191d2b864f290d2