behavior when password auth is used.

of the new pg_stats view.

pg_largeobject, pg_listener, pg_rewrite, pg_trigger; miscellaneous
small improvements.

as the example claimed, because of changes elsewhere in the system.

Enabling this feature adds very light overhead of 1 select from pg_class on
first using of pl/tcl in backend if unknown suppport is really unused.
But pl/tcl with this support has very improved functionality.

Patch includes changes to documentation.

side encoding name. This is necessary for client API's such as JDBC
to perform correct encoding conversions. See my email "[HACKERS]
pg_client_encoding" 10 Sep 2001.

transformAlterStmt() use these routines, instead of having lots of
duplicate (not to mention should-have-been-duplicate) code.
Adding a column with a CHECK constraint actually works now,
and the tests to reject unsupported DEFAULT and NOT NULL clauses
actually fire now.  ALTER TABLE ADD PRIMARY KEY works, modulo
having to have created the column(s) NOT NULL already.