proposal: row_to_array function

Hi

I am returning back to processing records in plpgsql.

I am thinking so it can be simply processed with transformations to array.

Now we have similar functions - hstore(row), row_to_json, ... but using of
these functions can be a useless step. Any row variable can be transformed
to 2D text array.

There two possible transformations:

row_to_array --> [[key1, value1],[key2, value2], ...]
row_to_row_array --> [(key1, value1), (key2, value2), ... ]

Both transformations can be simply implemented.

Comments, notices?

Regards

Pavel