report from krizsan.

Backpatch to 7.4.X.

to the discussion of planner statistics in the documentation for the
default_statistics_target GUC var.

equivalent sort expressions to use was broken: you can't just look
at the relation membership, you have to actually grovel over the
individual Vars in each expression.  I think this did work when it
was written, but it was broken by subsequent optimizations that made
join relations not propagate every single input variable upward.
Must find the Var that got propagated, not choose one at random.
Per bug report from Daniel O'Neill.

build for some versions of OpenJade (unfortunately, my local version of
OpenJade didn't report the error...) -- thanks to Andrew Dunstan for
the report.

default: some SGML tags weren't properly terminated.

Claudio Natoli

spent initializing it during indexscan startup.

of which redundant clause to remove, it removes the more expensive one.
In simple scenarios the clauses will be like 'var = var' and there's
no difference, but we are now capable of considering cases where there
are sub-selects in the clauses, and it makes a BIG difference.

indexTotalCost.  I think this may not make any real difference in 7.4,
but it definitely is a problem with CVS tip's new equation.

is generating, to avoid problems when subselects are involved.  Per
report from Damon Hart.

comments, make some unrelated improvements to the functions
documentation, and perform some minor consistency cleanup
elsewhere. Original initcap() change from Dennis B., additional
changes by Neil C.

later.

Corrects bit-rot of recently applied patch. win32/cygwin only.

Claudio Natoli

python.

* Changes incorrect CYGWIN defines to __CYGWIN__

* Some localtime returns NULL checks (when unchecked cause SEGVs under
Win32
regression tests)

* Rationalized CreateSharedMemoryAndSemaphores and
AttachSharedMemoryAndSemaphores (Bruce, I finally remembered to do it);
requires attention.

Claudio Natoli

Andrew Dunstan, some help from Tom Lane.

in pg_statistic are correctly aligned if they contain values that require
double alignment.  Too bad we cannot force initdb for this in 7.4 branch.

exposed thereby.  AFAICT these would not lead to any worse problems than
junk emitted on the backend's stdout, but we should have the option to
catch possible worse errors in future.

is still lacking, as is support in plpgsql and other places, but this is
the basic feature.  Patch by Andrew Dunstan, some tweaking by Tom Lane.
Also, enable %option nodefault in these two lexers, and patch some gaps
revealed thereby.

- Set pgtypeslib version to 1.2.

with ReturnSetInfo->expectedDesc. This allows custom datatypes
(e.g. from tsearch2) to be returned at runtime. Previous behavior
depended on the type oid to match between the remote and local
database, which obviously doesn't work well for custom types.
Per report from Mark Gibson.

reported by David Garamond when working with bytea parent and child keys.

any restore operation, thereby ensuring that dumped data is interpreted
the same way it was dumped even if the target database has a different
encoding.  Per suggestions from Pavel Stehule and others.  Also,
simplify scheme for handling check_function_bodies ... we may as well
just set that at the head of the script.

Per report from Chris Campbell.

and FreeDir routines modeled on the existing AllocateFile/FreeFile.
Like the latter, these routines will avoid failing on EMFILE/ENFILE
conditions whenever possible, and will prevent leakage of directory
descriptors if an elog() occurs while one is open.
Also, reduce PANIC to ERROR in MoveOfflineLogs() --- this is not
critical code and there is no reason to force a DB restart on failure.
All per recent trouble report from Olivier Hubaut.

number of openable files and the number already opened.  This eliminates
depending on sysconf(_SC_OPEN_MAX), and allows much saner behavior on
platforms where open-file slots are used up by semaphores.

fact that dl.h is a system header and not one of ours.

logically belongs.  Arrange to update the _NSGetArgv() copy of the argv
pointer on Darwin.  (It seems likely that other NeXT-derived platforms
also have an _NSGetArgv() problem, but until we have some reports I'll
just make this #ifdef __darwin__.)

documented), and fix a typo.