Support NAME data type

[cretz]

Simply add the NAME oid to the StringConversions and NAME_ARRAY to the array conv. It is used for object names in postgres.

[rzeigler]

I ran into this as well. As a stopgap, I produced a new type wrapper around String to use the user defined type conversion logic and it seems to work fine.

[cretz]

I just did a ::VARCHAR in the query to cast.