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

Log Message:
-----------
Assign:

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

Modified Files:
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pgsql/doc:
TODO (r1.1475 -> r1.1476)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1475&r2=1.1476)