even if none of the fields in the pg_class row change.  This behavior is
necessary to ensure other backends flush rd_targblock values that might
point to truncated-away pages.  We got this right pre-8.2 but it was broken
by overoptimistic change to not write out the pg_class row if unchanged.
Per report from Pavan Deolasee.

fix it.  Add macroses DatumGetNDBOX, PG_GETARG_NDBOX and PG_RETURN_NDBOX.
Backpatch for 8.2 too.

Previous versions use version 0 calling conventions. And fmgr code detoast
values for user-defined functions.

comments and variables to "auxiliary proc", per Heikki's request.

check_sql_fn_retval allows binary-compatibility cases, the expression
extracted from an inline-able SQL function might have a type that is only
binary-compatible with the declared function result type.  To avoid possibly
changing the semantics of the expression, we should insert a RelabelType node
in such cases.  This has only been shown to have bad consequences in recent
8.1 and up releases, but I suspect there may be failure cases in the older
branches too, so patch it all the way back.  Per bug #3116 from Greg Mullane.

Along the way, fix an omission in eval_const_expressions_mutator: it failed
to copy the relabelformat field when processing a RelabelType.  No known
observable failures from this, but it definitely isn't intended behavior.

by Toru SHIMOGAKI

comments, and cleanup functions.  Remove copyright that is no longer
relevant.

libpq. We need to keep libpq to build static libraries and to use PQtrace
with clients using older versions of MSVC.

with the recent largeobject cosmetic fixes. Jeremy Drake.

Jeremy Drake

Heikki Linnakangas

Simon Riggs

Florian G. Pflug

Kris Jurka

fixup various places in the tree that were clearing a StringInfo by hand.
Making this function a part of the API simplifies client code slightly,
and avoids needlessly peeking inside the StringInfo interface.

Darcy Buskermolen

Simon Riggs

> 	o -Allow psql \pset boolean variables to set to fixed values, rather

toggle.

Chad Wagner

* Add REPLACE or UPSERT command that does UPDATE, or on failure, INSERT
  [merge]

log_min_messages does; and arrange to suppress the duplicative output
that would otherwise result from log_statement and log_duration messages.
Bruce Momjian and Tom Lane.

this, add a 16-bit "flags" field to page headers by stealing some bits from
pd_tli.  We use one flag bit as a hint to indicate whether there are any
unused line pointers; the remaining 15 are available for future use.

This is a cut-down form of an idea proposed by Hiroki Kataoka in July 2005.
At the time it was rejected because the original patch increased the size of
page headers and it wasn't clear that the benefit outweighed the distributed
cost.  The flag-bit approach gets most of the benefit without requiring an
increase in the page header size.

Heikki Linnakangas and Tom Lane

It has been wrong for this case since it was first written for 7.1 :-(
Per report from Pavel Hanák.

Pavel Stehule

ways.  I'm not totally sure that I caught everything, but at least now they pass
their regression tests with VARSIZE/SET_VARSIZE defined to reverse byte order.

    <li>PostgreSQL is licensed under a BSD license.  By posting a patch
    to the public PostgreSQL mailling lists, you are giving the PostgreSQL
    Global Development Group the non-revokable right to distribute your
    patch under the BSD license.  If you use code that is available under
    some other license that is BSD compatible (eg. public domain), please
    note that in your email submission.</li>

Get rid of VARATT_SIZE and VARATT_DATA, which were simply redundant with
VARSIZE and VARDATA, and as a consequence almost no code was using the
longer names.  Rename the length fields of struct varlena and various
derived structures to catch anyplace that was accessing them directly;
and clean up various places so caught.  In itself this patch doesn't
change any behavior at all, but it is necessary infrastructure if we hope
to play any games with the representation of varlena headers.
Greg Stark and Tom Lane

Robert Treat