Don't dump core if pq_comm_reset() is called before pq_init().

This can happen if an error occurs in a standalone backend.  This bug
was introduced by commit 2bd9e412f92bc6a68f3e8bcb18e04955cc35001d.

Reported by Álvaro Herrera.
Fix pg_xlogdump's calculation of full-page image data.

The old formula was completely bogus with the new WAL record format.
Print wal_log_hints in the rm_desc routing of a parameter-change record.

It was an oversight in the original commit.

Also note in the sample config file that changing wal_log_hints requires a
restart.

Michael Paquier. Backpatch to 9.4, where wal_log_hints was added.
Print new track_commit_timestamp in rm_desc of a parameter-change record.

Michael Paquier
Remove erroneous EXTRA_CLEAN line from Makefile.

After commit da34731, these files are not generated files anymore.

Adam Brightwell
Don't include file type bits in tar archive's mode field.

The "file mode" bits in the tar file header is not supposed to include the
file type bits, e.g. S_IFREG or S_IFDIR. The file type is stored in a
separate field. This isn't a problem in practice, all tar programs ignore
the extra bits, but let's be tidy.

This came up in a discussion around bug #11949, reported by Hendrik Grewe,
although this doesn't fix the issue with tar --append. That turned out to be
a bug in GNU tar. Schilly's tartest program revealed this defect in the tar
created by pg_basebackup.

This problem goes as far as we we've had pg_basebackup, but since this
hasn't caused any problems in practice, let's be conservative and fix in
master only.
Give a proper error message if initdb password file is empty.

Used to say just "could not read password from file "...": Success", which
isn't very informative.

Mats Erik Andersson. Backpatch to all supported versions.
Tweaks for recovery_target_action

Rename parameter action_at_recovery_target to
recovery_target_action suggested by Christoph Berg.

Place into recovery.conf suggested by Fujii Masao,
replacing (deprecating) earlier parameters, per
Michael Paquier.
Event Trigger for table_rewrite

Generate a table_rewrite event when ALTER TABLE
attempts to rewrite a table. Provide helper
functions to identify table and reason.

Intended use case is to help assess or to react
to schema changes that might hold exclusive locks
for long periods.

Dimitri Fontaine, triggering an edit by Simon Riggs

Reviewed in detail by Michael Paquier
Remove duplicate code in heap_prune_chain()

No need to set tuple tableOid twice

Jim Nasby
Correct recovery_target_action docs

From Michael Paquier
doc: Fix DocBook table column count declaration

This was broken in 618c9430a82860c84a3be2711eec2c3b43573b2a.
Use GetSystemTimeAsFileTime directly in win32

PostgreSQL was calling GetSystemTime followed by SystemTimeToFileTime in the
win32 port gettimeofday function. This is not necessary and limits the reported
precision to the 1ms granularity that the SYSTEMTIME struct can represent. By
using GetSystemTimeAsFileTime we avoid unnecessary conversions and capture
timestamps at 100ns granularity, which is then rounded to 1µs granularity for
storage in a PostgreSQL timestamp.

On most Windows systems this change will actually have no significant effect on
timestamp resolution as the system timer tick is typically between 1ms and 15ms
depending on what timer resolution currently running applications have
requested. You can check this with clockres.exe from sysinternals. Despite the
platform limiation this change still permits capture of finer timestamps where
the system is capable of producing them and it gets rid of an unnecessary
syscall.

The higher resolution GetSystemTimePreciseAsFileTime call available on Windows
8 and Windows Server 2012 has the same interface as GetSystemTimeAsFileTime, so
switching to GetSystemTimeAsFileTime makes it easier to use the Precise variant
later.

Craig Ringer, reviewed by David Rowley
Windows: use GetSystemTimePreciseAsFileTime if available

PostgreSQL on Windows 8 or Windows Server 2012 will now
get high-resolution timestamps by dynamically loading the
GetSystemTimePreciseAsFileTime function. It'll fall back to
to GetSystemTimeAsFileTime if the higher precision variant
isn't found, so the same binaries without problems on older
Windows releases.

No attempt is made to detect the Windows version.  Only the
presence or absence of the desired function is considered.

Craig Ringer
REINDEX SCHEMA

Add new SCHEMA option to REINDEX and reindexdb.

Sawada Masahiko

Reviewed by Michael Paquier and Fabrízio de Royes Mello
Execute 18 tests for src/bin/scripts/t/090..

Some requests count as two tests.
Silence REINDEX

Previously REINDEX DATABASE and REINDEX SCHEMA
produced a stream of NOTICE messages. Removing that
since it is inconsistent for such a command to
produce output without a VERBOSE option.
pg_xlogdump/.gitignore: add committsdesc.c

Author: Michael Paquier
Add a regression test suite for SSL support.

It's not run by the global "check" or "installcheck" targets, because the
temporary installation it creates accepts TCP connections from any user
the same host, which is insecure.
Fix minor thinko in convertToJsonb().

The amount of space to reserve for the value's varlena header is
VARHDRSZ, not sizeof(VARHDRSZ).  The latter coding accidentally
failed to fail because of the way the VARHDRSZ macro is currently
defined; but if we ever change it to return size_t (as one might
reasonably expect it to do), convertToJsonb() would have failed.

Spotted by Mark Dilger.