libpq - extending PQexecParams/PQexecPrepared to specify resultFormat for individual result columns

Hi guys,
I hacked PostgreSQL 8.4.1 libpq and added a new function to specify
resultFormat for individual result columns.
Are you interested in a patch?

(http://www.postgresql.org/docs/8.4/interactive/libpq-exec.html says:
There is not currently a provision to obtain different result columns
in different formats, although that is possible in the underlying
protocol.
So I made this possible.)

Kind regards,
Ivosh