* Store two past checkpoint locations, not just one, in pg_control.
  On startup, we fall back to the older checkpoint if the newer one
  is unreadable.  Also, a physical copy of the newest checkpoint record
  is kept in pg_control for possible use in disaster recovery (ie,
  complete loss of pg_xlog).  Also add a version number for pg_control
  itself.  Remove archdir from pg_control; it ought to be a GUC
  parameter, not a special case (not that it's implemented yet anyway).

* Suppress successive checkpoint records when nothing has been entered
  in the WAL log since the last one.  This is not so much to avoid I/O
  as to make it actually useful to keep track of the last two
  checkpoints.  If the things are right next to each other then there's
  not a lot of redundancy gained...

* Change CRC scheme to a true 64-bit CRC, not a pair of 32-bit CRCs
  on alternate bytes.  Polynomial borrowed from ECMA DLT1 standard.

* Fix XLOG record length handling so that it will work at BLCKSZ = 32k.

* Change XID allocation to work more like OID allocation.  (This is of
  dubious necessity, but I think it's a good idea anyway.)

* Fix a number of minor bugs, such as off-by-one logic for XLOG file
  wraparound at the 4 gig mark.

* Add documentation and clean up some coding infelicities; move file
  format declarations out to include files where planned contrib
  utilities can get at them.

* Checkpoint will now occur every CHECKPOINT_SEGMENTS log segments or
  every CHECKPOINT_TIMEOUT seconds, whichever comes first.  It is also
  possible to force a checkpoint by sending SIGUSR1 to the postmaster
  (undocumented feature...)

* Defend against kill -9 postmaster by storing shmem block's key and ID
  in postmaster.pid lockfile, and checking at startup to ensure that no
  processes are still connected to old shmem block (if it still exists).

* Switch backends to accept SIGQUIT rather than SIGUSR1 for emergency
  stop, for symmetry with postmaster and xlog utilities.  Clean up signal
  handling in bootstrap.c so that xlog utilities launched by postmaster
  will react to signals better.

* Standalone bootstrap now grabs lockfile in target directory, as added
  insurance against running it in parallel with live postmaster.

tuples inserted/deleted/updated in a single transaction.  On my machine,
this reduced the time to delete 80000 tuples in a foreign-key-referencing
table from ~15min to ~8sec.

AC_SUBST that messed up the diversions and thus the configure output.

Respect default port setting in JDBC driver.
Pick up version number from Makefile.global.
Change installation directory to share/java/.
Document.

driver does not work because its internal cross-references get bound
to similarly named functions in unixODBC shared library.

psqlodbc.c's constructor-making techniques do not work.

of DSSSL.

under the postmaster --- specifically, if we are a standalone backend
running under the initdb script, this is critical!

2)Fix some memory leaks.
3)Change some bogus error messages.

handle this.

be allowed to receive ungrouped variables of the current query level.
Curious that no one reported this bug before...

of a counted input string.  Marinos Yannikos' recent crash report turns
out to be due to applying pg_ascii2wchar_with_len to a TEXT object that
is smack up against the end of memory.  This is the second just-barely-
reproducible bug report I have seen that traces to some bit of code
fetching one more byte than it is allowed to.  Let's be more careful
out there, boys and girls.
While at it, I changed the code to not risk a similar crash when there
is a truncated multibyte character at the end of an input string.  The
output in this case might not be the most reasonable output possible;
if anyone wants to improve it further, step right up...

succeeds or not.  Revise rtree page split algorithm to take care about
making a feasible split --- ie, will the incoming tuple actually fit?
Failure to make a feasible split, combined with failure to notice the
failure, account for Jim Stone's recent bug report.  I suspect that
hash and gist indices may have the same type of bug, but at least now
we'll get error messages rather than silent failures if so.  Also clean
up rtree code to use Datum rather than char* where appropriate.

One more :)) It's for improper function argumets for
PLTCL_UNKNOWN_SUPPORT code

I'm not an autoconf expert, but is it possible to enable unknown
support in pltcl with configure option ?
This support is really handy for real life usage of pl/tcl.

seva@sevasoft.kiev.ua

in splitting code:

seva@sevasoft.kiev.ua

directories, per suggestion from Robert Creager.

        - Removed org.postgresql.xa.Test from the JDBC EE driver as it's an old
          test class and prevented it from compiling.

- Prevent double-dumping of sequences when dataOnly.

- Change -U option to -L to allow -U to specify username in future. (pg_restore)