Merge uptop '76c7d2af' from PostgreSQL 8.3

All the commits in this set were either doc commits or had already been cherry
picked into GPDB so barring a small pg_sleep() diff in the tests, another merge
without side effects.

 Conflicts:
	configure
	doc/src/sgml/Makefile
	doc/src/sgml/docguide.sgml
	src/backend/access/nbtree/nbtinsert.c
	src/backend/postmaster/postmaster.c
	src/backend/utils/adt/selfuncs.c
	src/port/exec.c

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.497 2007/01/18 14:07:31 petere Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.499 2007/01/28 03:50:33 momjian Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl

src/backend/access/nbtree/nbtinsert.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.146.2.2 2007/12/31 04:52:20 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.148 2007/01/27 20:53:30 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */

src/backend/postmaster/postmaster.c

@@ -38,7 +38,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.512 2007/01/23 03:28:49 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/postmaster/postmaster.c,v 1.515 2007/01/28 06:32:03 tgl Exp $
  *
  * NOTES
  *

src/backend/utils/adt/selfuncs.c

@@ -16,7 +16,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.221 2007/01/22 20:00:40 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/selfuncs.c,v 1.223 2007/01/28 02:53:34 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */

src/test/regress/expected/stats.out

@@ -11,6 +11,14 @@ SHOW stats_start_collector;  -- must be on
  on
 (1 row)
 
+-- wait to let any prior tests finish dumping out stats;
+-- else our messages might get lost due to contention
+SELECT pg_sleep(2.0);
+ pg_sleep 
+----------
+ 
+(1 row)
+
 -- save counters
 CREATE TEMP TABLE prevstats AS
 SELECT t.seq_scan, t.seq_tup_read, t.idx_scan, t.idx_tup_fetch,

src/test/regress/sql/stats.sql

@@ -8,6 +8,10 @@
 -- conditio sine qua non
 SHOW stats_start_collector;  -- must be on
 
+-- wait to let any prior tests finish dumping out stats;
+-- else our messages might get lost due to contention
+SELECT pg_sleep(2.0);
+
 -- save counters
 CREATE TEMP TABLE prevstats AS
 SELECT t.seq_scan, t.seq_tup_read, t.idx_scan, t.idx_tup_fetch,