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