CSV mode option for pg_dump

Something someone said on IRC just now triggered a little memory  ... I 
think we should provide an option to have pg_dump work in CSV mode 
rather than text mode. This probably doesn't have much importance in the 
case of text dumps, but in custom or tar dumps where you might want to 
get at individual data members, having an option for CSVs that you want 
to load into some other product might be nice.

This should be a pretty low cost item, I expect (good newbie project?)

thoughts?

cheers

andrew