pgsql-server: Add psql tab completion TODO: < * -Have psql \dn show

Log Message:
-----------
Add psql tab completion TODO:

< * -Have psql \dn show only visible temp schemas using current_schemas()
< * -Have psql '\i ~/<tab><tab>' actually load files it displays from home dir
484a483,484
> * -Have psql \dn show only visible temp schemas using current_schemas()
> * -Have psql '\i ~/<tab><tab>' actually load files it displays from home dir
516a517,527
>
> * psql tab completion
>
>     o Provide a list of conversions after ALTER CONVERSION?
>     o Support for ALTER SEQUENCE clauses
>     o Add RENAME TO to ALTER TRIGGER
>     o Support for ALTER USER
>     o Fix ALTER (GROUP|DOMAIN|...) <sth> DROP
>     o Support for ALTER LANGUAGE <sth> RENAME TO
>     o Improve support for COPY
>     o Improve support for ALTER TABLE

Modified Files:
--------------
    pgsql-server/doc:
        TODO (r1.1339 -> r1.1340)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/TODO.diff?r1=1.1339&r2=1.1340)