particular this allows EmitWarningsOnPlaceholders messages to show up in the
postmaster log by default.  Update elog.h comment to make it clearer what INFO
is for, and fix one example in the SGML docs that was misusing it.  Per my
gripe of yesterday.

where there's no limit on the size of datum we'll try to compress.
Other 8.4 tweaks to the behavior remain in place.  Per discussion.

earlier than all the other sizeof checks, and it certainly fails to follow
the order suggested at the file head.  Rearrange.

If the table was smaller than REL_TRUNCATE_FRACTION (= 16) pages, we always
tried to acquire AccessExclusiveLock on it even if there was no empty pages
at the end.

Report by Simon Riggs. Back-patch all the way to 7.4.

document change.

restricted.

default expressions to a function call, eval_const_expressions must recurse on
those expressions.  Else they don't get simplified, and in particular we fail
to insert additional default arguments if any functions needing defaults are
in there.  Per report from Rushabh Lathia.

a more complete framework for writing custom option processing routines
by user-defined access methods.

Catalog version bumped due to the general API changes, which are going to
affect user-defined "amoptions" routines.

performing dumps and restores in accordance with a security policy that
forbids logging in directly as superuser, but instead specifies that you
should log into an admin account and then SET ROLE to the superuser.

In passing, clean up some ugly and mostly-broken code for quoting shell
arguments in pg_dumpall.

Benedek László, with some help from Tom Lane

Jun Kuwamura

re-loading a library already loaded into the postmaster.

ITAGAKI Takahiro

get listed in custom_variable_classes.

present in the placeholder.  Noted while testing pg_stat_statements.

when --with-system-tzdata is not used.

initial patch by Richard Evans

of pwd vs. pwd -W is correctly a function of the build system, not the
host system.

Author: Richard Evans <richard.evans@blueallegro.net>

ITAGAKI Takahiro

statistics.

Takahiro Itagaki

except the caller can specify the encoding to work in; this will be needed
for pg_stat_statements.  In passing, do some marginal efficiency hacking
and clean up some comments.  Also, prevent the single-byte-encoding code
path from fetching one byte past the stated length of the string (this
last is a bug that might need to be back-patched at some point).

be written for *non*-temp tables only. Report and test case by Mark
Kirkwood and Simon Riggs.

print foo --> print(foo)
string.join(...) --> ' '.join(...)

These changes are backward compatible.

The actual plpython module appears to need significant updates to support
Python 3.0, though.  This change just relieves interested developers from
having to deal with Autoconf.

when loaded via shared_preload_libraries.  Needed for support of
pg_stat_statements, or pretty much anything else that wants a GUC to
control size of a shared memory allocation.

initialization, to give loadable modules a reasonable place to perform
creation of any shared memory areas they need.  This is the logical conclusion
of our previous creation of RequestAddinShmemSpace() and RequestAddinLWLocks().
We don't need an explicit shmem_shutdown_hook, because the existing
on_shmem_exit and on_proc_exit mechanisms serve that need.

Also, adjust SubPostmasterMain so that libraries that got loaded into the
postmaster will be loaded into all child processes, not only regular backends.
This improves consistency with the non-EXEC_BACKEND behavior, and might be
necessary for functionality for some types of add-ons.

practically free given prior 8.4 changes in plancache and portal management,
and it makes it a lot easier for ExecutorStart/Run/End hooks to get at the
query text.  Extracted from Itagaki Takahiro's pg_stat_statements patch,
with minor editorialization.

preprocessor and the library.  This is useful for a number of reasons:

* The preprocessor and the library are in some cases installed in separate
packages and used by different classes of users.

* The library MO files need a different versioning scheme to account for the
soname.

* The makefiles are simpler, more robust, and easier to maintain this way.
(NLS web site was prone to break everytime a build rule changes.)

* Translators might choose to focus on the ecpglib, because that is more
user-facing.

* There was virtually no overlap, so nothing is lost.

documentation.

it was the ldaptls parameter that was wrong...

parameters.

the postmaster. They are only used in backend processes, so it's just
a matter of re-labeling the GUCs.

first; otherwise backends reading the file might reject values of custom
variables.  Per experimentation with auto_explain.

and change auto_explain's custom GUC variables to be named auto_explain.xxx
not just explain.xxx.  Per discussion in connection with the
pg_stat_statements patch, it seems like a good idea to have the convention
that custom variable classes are named the same as their defining module.
Committing separately since this should happen regardless of what happens
with pg_stat_statements itself.

copyright too.