> * Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS [exists]

choke at 2Gb of output.  From Andrew Sullivan.

> * Use thread-safe crypt() in libpq, if available

tom lane

Previous versions did not correctly identify primary/foreign keys

dumped by pg_dump -o.  Per bug report posted by Bruce; fix is from
Philip Warner, reviewed by Tom Lane.

cannot see a reason why it should be an error.

mess up after an aborted VACUUM FULL, per today's pghackers discussion.
Add a suitable HeapTupleSatisfiesToast routine.  Remove useless special-
case test in HeapTupleSatisfiesVisibility macro for xmax =
BootstrapTransactionId; perhaps that was needed at one time, but it's
a waste of cycles now, not to mention actively wrong for SnapshotAny.
Along the way, add some much-needed comments to tqual.c, and simplify
toast_fetch_datum, which no longer needs to assume it may see chunks
out-of-order.

This saves one open file descriptor per backend, and avoids an
annoying NOTICE on Cygwin (which has trouble deleting open files).
Bug appears to date back to original coding of init_irels, circa 1992.

temporary file.  This seems to be a known failure mode under Cygwin,
so we might as well expend the extra line of code to be tidy.

to prevent spreading of corruption when page header pointers are bad.
Merge PageZero into PageInit, since it was never used separately, and
remove separate memset calls used at most other PageInit call points.
Remove IndexPageCleanup, which wasn't used at all.

the two trigger sets were logically equal, but not in the same order.
Caught by Holger Krug (hkrug@rationalizer.com).

Applied patch submitted by Ryouichi Matsuda (r-matuda@sra.co.jp) that fixed a problem with leading zeros being lost on fractional seconds when setting a timestamp value on a PreparedStatement.

driver was not properly handling timestamptz datatype when using the
getObject() method on ResultSet.  Fix adds this datatype to the object mappings.

per my proposal of a couple days ago.  This will eliminate the unable-
to-restart-database class of problem that we have seen reported half a
dozen times with 7.1.*.

changes.