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

casts to text.

parent query's EState.  Now that there's a single flat rangetable for both
the main plan and subplans, there's no need anymore for a separate EState,
and removing it allows cleaning up some crufty code in nodeSubplan.c and
nodeSubqueryscan.c.  Should be a tad faster too, although any difference
will probably be hard to measure.  This is the last bit of subsidiary
mop-up work from changing to a flat rangetable.

is still needed despite cleanups in setrefs.c, because the point is to
let the inserted Result node compute a different tlist than its input
node does.  Per example from Jeremy Drake.

drill down into subplan targetlists to print the referent expression for an
OUTER or INNER var in an upper plan node.  Hence, make it do that always, and
banish the old hack of showing "?columnN?" when things got too complicated.

Along the way, fix an EXPLAIN bug I introduced by suppressing subqueries from
execution-time range tables: get_name_for_var_field() assumed it could look at
rte->subquery to find out the real type of a RECORD var.  That doesn't work
anymore, but instead we can look at the input plan of the SubqueryScan plan
node.