pgsql: Add: > o Update pg_dump and psql to use the new COPY libpq API

Log Message:
-----------
Add:

o Update pg_dump and psql to use the new COPY libpq API

Modified Files:
--------------
pgsql/doc:
TODO (r1.1470 -> r1.1471)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1470&r2=1.1471)