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

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