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.

tag as beta 5 for *hopefully* a very very short beta cycle on this one?

beta4 to beta5.

        - Removed check for array input. An attribut might store the
          complete array.

fixes.

truly; should be verified by someone with an appropriate system).

 Thanks to Bruce for spotting it and Tom Lane for diagnosing it.
Since horology test output is changing anyway, add some date/time input
 tests to horology.sql. Some of these should move to the tests for the
 individual data types, and we perhaps should add an entire new test
 for "timezone" to allow manipulating the current time zone without
 risking damage to the results of other tests.

their names from pg_class.  This considerably reduces the window wherein
someone could DROP or ALTER a table that pg_dump is intending to dump.
Not a perfect solution, but definitely an improvement.  Per complaints
from Marc Fournier; patch by Brent Verner with some kibitzing by Tom Lane.