Provide MSVC build setup for pg_xlogdump.
Add -d option to pg_basebackup and pg_receivexlog, for connection string.

Without this, there's no way to pass arbitrary libpq connection parameters
to these applications. It's a bit strange that the option is called
-d/--dbname, when in fact you can *not* pass a database name in it, but it's
consistent with other client applications where a connection string is also
passed using -d.

Original patch by Amit Kapila, heavily modified by me.
Redo MSVC build implementation for pg_xlogdump.

The previous commit didn't work on MSVC editions earlier than
Visual Studio 2011, apparently. This works by copying files into the
contrib directory, and making provision to clean them up, which should
work on all editions.
Add -d/--dbname option to pg_dump.

You could already pass a database name just by passing it as the last
option, without -d. This is an alias for that, like the -d/--dbname option
in psql and many other client applications. For consistency.
Add -d option to pg_dumpall, for specifying a connection string.

Like with pg_basebackup and pg_receivexlog, it's a bit strange to call the
option -d/--dbname, when in fact you cannot pass a database name in it.

Original patch by Amit Kapila, heavily modified by me.
Only quote libpq connection string values that need quoting.

There's no harm in excessive quoting per se, but it makes the strings nicer
to read. The values can get quite unwieldy, when they're first quoted within
within single-quotes when included in the connection string, and then all
the single-quotes are escaped when the connection string is passed as a
shell argument.
doc: Fix markup typo
Remove the check for COPY TO STDIN and COPY FROM STDOUT from ecpg.

The backend grammar treats STDIN and STDOUT completely interchangeable, so
that the above accepted. Arguably that was a mistake the backend grammar,
but it's not ecpg's business to second guess that.
Install headers from the new src/include/common subdirectory.

This got missed in commit 8396447cdbdff0b62914748de2fec04281dc9114.

Andres Freund
Clean up "stopgap" implementation of timestamptz_to_str().

Use correct type for "result", fix bogus strftime argument, don't use
unnecessary static variables, improve comments.

Andres Freund and Tom Lane
Add missing .gitignore file.
Add missing error check in regexp parser.

parseqatom() failed to check for an error return (NULL result) from its
recursive call to parsebranch(), and in consequence could crash with a
null-pointer dereference after an error return.  This bug has been there
since day one, but wasn't noticed before, probably because most error cases
in parsebranch() didn't actually lead to returning NULL.  Add the missing
error check, and also tweak parsebranch() to exit in a less indirect
fashion after a call to parseqatom() fails.

Report by Tomasz Karlik, fix by me.
Add support for piping COPY to/from an external program.

This includes backend "COPY TO/FROM PROGRAM '...'" syntax, and corresponding
psql \copy syntax. Like with reading/writing files, the backend version is
superuser-only, and in the psql version, the program is run in the client.

In the passing, the psql \copy STDIN/STDOUT syntax is subtly changed: if you
the stdin/stdout is quoted, it's now interpreted as a filename. For example,
"\copy foo from 'stdin'" now reads from a file called 'stdin', not from
standard input. Before this, there was no way to specify a filename called
stdin, stdout, pstdin or pstdout.

This creates a new function in pgport, wait_result_to_str(), which can
be used to convert the exit status of a process, as returned by wait(3),
to a human-readable string.

Etsuro Fujita, reviewed by Amit Kapila.
Add standard file header comment to quotes.c.
Cannot use WL_SOCKET_WRITEABLE without WL_SOCKET_READABLE.

In copy-out mode, the frontend should not send any messages until the
backend has finished streaming, by sending a CopyDone message. I'm not sure
if it would be legal for the client to send a new query before receiving the
CopyDone message from the backend, but trying to support that would require
bigger changes to the backend code structure.

Fixes an assertion failure reported by Fujii Masao.
Fix typo in "pg_xlogdump --help" and error message.

Fujii Masao and me.
Fix MSVC build.

The new file in src/port needs to be listed in Mkvcbuild.pm as well.
Remove spurious "the", and add a missing one.

Thom Brown and me.
Flush stderr and stdout in isolation tester.

This is a possibly vain attempt to fix a buffering issue
observed for some MSVC builds.
Improve pg_upgrade commentary on multixact change

Per gripe from Andres Freund