with PG version 8.2-8.4.

identify the new API.

Add support to pg_dump --binary-upgrade to preserve all relfilenodes,
for use by pg_migrator.

Implement pg_dump --only-analyze for use by pg_migrator to only analyze
all databases.

Move OIDCHARS to proper include file.

Use OIDCHARS for oid character length, rather than '10', in tablespace
code.

Variables must consist of only alphabets, numerals and underscores.
We had allowed to set variables with invalid names, but could not
refer them in queries.

Thanks to Robert Haas for the review.

peculiar variant of UNION ALL, and so wouldn't likely get written directly
as-is, it's possible for it to arise as a result of simplification of
less-obviously-silly queries.  In particular, now that we can do flattening
of subqueries that have constant outputs and are underneath an outer join,
it's possible for the case to result from simplification of queries of the
type exhibited in bug #5263.  Back-patch to 8.4 to avoid a functionality
regression for this type of query.

This patch only supports seq_page_cost and random_page_cost as parameters,
but it provides the infrastructure to scalably support many more.
In particular, we may want to add support for effective_io_concurrency,
but I'm leaving that as future work for now.

Thanks to Tom Lane for design help and Alvaro Herrera for the review.

so that it's safe if a parallel make chooses to run two concurrent copies.
Also, work around a memory leak in some versions of Perl.

ecpg in both native and compatiblity mode.

and allow using config.pl to override the defaults. config.pl is removed from
the repository, so changes there will no longer show up when doing diff, and
will not prevent switching branches and such things.

config.pl would normally be used to override single values, but if an
old-style config.pl is read, it will override the entire default configuration,
making it backwards compatible.

symbols both using __declspec(dllexport) (via the PGDLLIMPORT macro) and using
full-dll-export. This works without warning on Win32, but not on Win64.

In passing, fix the fact that the framework could never deal with more than
one disbled linker warning - because MSVC wants commas between linker warnings,
and semicolons between compiler warnings...

rather random code choices, don't slavishly duplicate the original
pg_attribute.h's failure to put an OID into Schema_pg_index entries.

VPATH builds.  We had this already in several places, but not all.

files when they haven't changed.  This confuses make because the build fails
to update the file timestamps, and so it keeps on doing the action over again.

pg_attribute, by having genbki.pl derive the information from the various
catalog header files.  This greatly simplifies modification of the
"bootstrapped" catalogs.

This patch finally kills genbki.sh and Gen_fmgrtab.sh; we now rely entirely on
Perl scripts for those build steps.  To avoid creating a Perl build dependency
where there was not one before, the output files generated by these scripts
are now treated as distprep targets, ie, they will be built and shipped in
tarballs.  But you will need a reasonably modern Perl (probably at least
5.6) if you want to build from a CVS pull.

The changes to the MSVC build process are untested, and may well break ---
we'll soon find out from the buildfarm.

John Naylor, based on ideas from Robert Haas and others

trigger tuple modification or SPI call, to ensure they are valid in the
server encoding. Along the way, replace uses of SvPV(foo, PL_na)
with SvPV_nolen(foo) as recommended in the perl docs. Bug report from
Hannu Krosing.

We can't use the same as before, since MSVC on Win64 doesn't
support inline assembly.

where to install DATA and DOCS files.  This is mainly intended to allow
versioned installation, eg, install into contrib/fooM.N/ rather than
directly into contrib/.

Mark Cave-Ayland

recovery instead of reading the backup history file. This is more robust,
as it stops you from prematurely starting up an inconsisten cluster if the
backup history file is lost for some reason, or if the base backup was
never finished with pg_stop_backup().

This also paves the way for a simpler streaming replication patch, which
doesn't need to care about backup history files anymore.

The backup history file is still created and archived as before, but it's
not used by the system anymore. It's just for informational purposes now.

Bump PG_CONTROL_VERSION as the location of the backup startpoint is now
written to a new field in pg_control, and catversion because initdb is
required

Original patch by Fujii Masao per Simon's idea, with further fixes by me.

"column < constant", and the comparison value is in the first or last
histogram bin or outside the histogram entirely, try to fetch the actual
column min or max value using an index scan (if there is an index on the
column).  If successful, replace the lower or upper histogram bound with
that value before carrying on with the estimate.  This limits the
estimation error caused by moving min/max values when the comparison
value is close to the min or max.  Per a complaint from Josh Berkus.

It is tempting to consider using this mechanism for mergejoinscansel as well,
but that would inject index fetches into main-line join estimation not just
endpoint cases.  I'm refraining from that until we can get a better handle
on the costs of doing this type of lookup.

indexscans would do the wrong thing if index_rescan() was called with a
NULL instead of a new set of scankeys and the index was DESC order,
because sk_strategy would not get flipped a second time.  I think
that those provisions for a NULL argument are dead code now as far as the
core backend goes, but possibly somebody somewhere is still using it.
In any case, this refactoring seems clearer, and it's definitely shorter.

This is needed to avoid unwanted interference with SUBSTRING behavior,
as per bug #5257 from Roman Kononov.  Also, add some basic intelligence
about character classes (bracket expressions) since we now have several
behaviors that aren't appropriate inside a character class.

As with the previous patch in this area, I'm reluctant to back-patch
since it might affect applications that are relying on the prior
behavior.

expressions: FormIndexDatum requires the estate's scantuple to already point
at the tuple the values are supposedly being extracted from.  Adjust test
case so that this type of confusion will be exposed.
Per report from hubert depesz lubaczewski.