new json funcs - Mailing list pgsql-hackers

Here is a patch for the new json functions I mentioned a couple of
months ago. These are:

     json_to_record
     json_to_recordset
     json_object
     json_build_array
     json_build_object
     json_object_agg

So far there are no docs, but the way these work is illustrated in the
regression tests - I hope to have docs within a few days.

cheers

andrew