Add some checks on various data types are converted into and out of Python.
This is extracted from Caleb Welton's patch for improved bytea support,
but much expanded.

Böszörményi Zoltán <zb@cybertec.at>.

When examining what Python type to convert a PostgreSQL type to on input,
look at the base type of the input type, otherwise all domains end up
defaulting to string.

since we're evidently not testing that at all right now :-(

I mistakenly removed it last month, thinking it was no longer needed ---
but it is still needed for dealing with joininfo lists.  Fortunately this
bit of brain fade hadn't made it into any released versions yet.

does match some unique index on the referenced table, but that index is
only deferrably unique.  We were doing this nicely for the
default-to-primary-key case, but were being lazy for the other case.

Dean Rasheed

To make this work in the base case, pg_database now has a nailed-in-cache
relation descriptor that is initialized using hardwired knowledge in
relcache.c.  This means pg_database is added to the set of relations that
need to have a Schema_pg_xxx macro maintained in pg_attribute.h.  When this
path is taken, we'll have to do a seqscan of pg_database to find the row
we need.

In the normal case, we are able to do an indexscan to find the database's row
by name.  This is made possible by storing a global relcache init file that
describes only the shared catalogs and their indexes (and therefore is usable
by all backends in any database).  A new backend loads this cache file,
finds its database OID after an indexscan on pg_database, and then loads
the local relcache init file for that database.

This change should effectively eliminate number of databases as a factor
in backend startup time, even with large numbers of databases.  However,
the real reason for doing it is as a first step towards getting rid of
the flat files altogether.  There are still several other sub-projects
to be tackled before that can happen.

to access a Relation entry it had just closed.  I happened to be testing with
CLOBBER_CACHE_ALWAYS, which made this a guaranteed core dump (at least on
machines where sprintf %s isn't forgiving of a NULL pointer).  It's probably
quite unlikely that it would fail in the field, but a bug is a bug.  Fix by
moving the relation_close call down past the logging action.

of the previous monolithic setup-create-run sequence, that was apparently
inherited from a previous test infrastructure, but makes working with the
tests and adding new ones weird.

It turns out that Python 2.2 is the oldest version that PL/Python compiles
with, apparently related to the introduction of iterators.  Might as well
document this.

Per Andreas Wenk, Andres Freund and Rob Wultsh.  Thanks, Robert Haas, for the
patch.

The code in the new block was not reindented; it will be fixed by pgindent
eventually.

Pavel Stehule, Brendan Jurd

Backpatch to 8.4.X.

seconds, per gripe from Richard Neill.  Also, add a cross-reference to
the to_timestamp function.

There are probably still some adjustments to be made in the details
of the output, but this gets the basic structure in place.

Robert Haas

Re-add documentation for --no-readline option of psql, mistakenly removed a decade ago. Backpatch to release 7.4.

Documentation files in HTML and man formats are now prepared for
distribution using the distprep make target, like everything else.  They
are placed in doc/src/sgml/html and manX and installed from there by
make install, if present.  The business with the tarballs in the tarball
is gone.

Per comment from Simon.

two new lists, rather than repeatedly rescanning the main TOC list.
This avoids a potential O(N^2) slowdown, although you'd need a *lot*
of tables to make that really significant; and it might simplify future
improvements in the scheduling algorithm by making the set of ready
items more easily inspectable.  The original thought that it would
in itself result in a more efficient job dispatch order doesn't seem
to have been borne out in testing, but it seems worth doing anyway.

Test coverage support now covers the entire source tree, including
contrib, instead of just src/backend.  In a related but independent
development, the commands make coverage and make coverage-html can be run
in any directory.

This turned out to be much easier than feared.  Besides a few ad hoc fixes
to pass the make target down the tree, change all affected makefiles to
list their directories in the SUBDIRS variable, changed from variants like
DIRS and WANTED_DIRS.  MSVC build fix was attempted as well.

when we reach the post-COPY "pump it dry" error recovery code that was added
2006-11-24.  Per a report from Neil Best, there is at least one code path
in which this occurs, leading to an infinite loop in code that's supposed
to be making it more robust not less so.  A reasonable response seems to be
to call PQputCopyEnd() again, so let's try that.

Back-patch to all versions that contain the cleanup loop.

appears to explain the recent reports of "PANIC: cannot make new WAL entries
during recovery".

Noticed by Itagaki Takahiro.

Main problem found by Muhammad Aqeel, some cosmetic additions by me.

based on a patch send in by Böszörményi Zoltán <zb@cybertec.at>.

if a smart shutdown is already in progress. Backpatch to 8.3, this was broken
in the patch that introduced "dead-end backends".

Per report by Itagaki Takahiro, patch by Fujii Masao.

by supporting conversions in places that used to demand exact rowtype match.

Since this issue is certain to come up elsewhere (in fact, already has,
in ExecEvalConvertRowtype), factor out the support code into new core
functions for tuple conversion.  I chose to put these in a new source
file since heaptuple.c is already overly long.

Heavily revised version of a patch by Pavel Stehule.

backend startup on Win32. Instead, log the error and just forget about
the potentially dangling process, since we can't do anything about it anyway.