PTHREAD_LIBS to all libpq-usage builds.

binary compiles, and adjust configure tests for AIX.

from goranpop@nspoint.net.  I think this escaped notice because in
simple cases the list is NIL on entry.

silently ignored, allowing one to write bizarre things like
	DECLARE x setof int;
in plpgsql.  This has misled at least one novice into thinking that
plpgsql variables could be sets ...

redundant cross-datatype comparisons.  Per example from Merlin Moncure.

checks, to ensure the previous test backend has time to quit out of the
regression database.  Also, allow all the checks to be run even if one
of them fails.  Per suggestions from Andrew Dunstan to improve the
usefulness of buildfarm testing.

thought there couldn't be any, but the folly of this was exposed by an
example from andrew@supernews.com 5-Dec-2004.  The patch applies the
identical logic already used for table constraints and defaults to ON
SELECT rules, so I have reasonable confidence in it even though it might
look like complicated logic.

be emitted too soon.  The previous code got this right in the case where
the CHECK was emitted as a separate ALTER TABLE command, but not in the
case where the CHECK is emitted right in CREATE TABLE.  Per report from
Slawomir Sudnik.

Note: this code is pretty ugly; it'd perhaps be better to treat comments
as independently sortable dump objects.  That'd be much too invasive a
change for RC time though.

root-owned files will be written to the data directory, leaving it in an
unusable state.

< 	o Allow the shared memory address to be configured via GUC

< 	o Remove per-backend parameter file and move into shared memory

Add for Win32:
> 	o Allow the shared memory address to be configured via GUC

>
> * Allow the size of the buffer cache used by temporary objects to be
>   specified as a GUC variable
>
>   Larger local buffer cache sizes requires more efficient handling of
>   local cache lookups.

Euler Taveira de Oliveira

in prettyprint mode.  Andreas Pflug

the row types of parent/child tables.

had to do in DECLARE CURSOR.  AFAICS these are all the places affected.
PREPARE case per example from Michael Fuhr, EXPLAIN case located by
grepping for planner calls ...

exit status in multiline traps.

(rd_att) field of a nailed-in-cache relcache entry.  This fixes the bug
reported by Alvaro 8-Dec-2004; I believe it probably also explains
Grant Finnemore's report of 10-Sep-2004.

In an unrelated change in the same file, put back 7.4's response to
failure to rename() the relcache init file, ie, unlink the useless
temp file.  I did not put back the warning message, since there might
actually be some reason not to have that.

of an inheritance child table is binary-compatible with the rowtype of
its parent, invent an expression node type that does the conversion
correctly.  Fixes the new bug exhibited by Kris Shannon as well as a
lot of old bugs that would only show up when using multiple inheritance
or after altering the parent table.