Merge with 4.0.20

BitKeeper/etc/logging_ok:
  auto-union
client/mysql.cc:
  Auto merged
client/mysqltest.c:
  Auto merged
innobase/btr/btr0btr.c:
  Auto merged
innobase/dict/dict0dict.c:
  Auto merged
innobase/dict/dict0load.c:
  Auto merged
innobase/eval/eval0eval.c:
  Auto merged
innobase/ibuf/ibuf0ibuf.c:
  Auto merged
innobase/include/ut0mem.h:
  Auto merged
innobase/lock/lock0lock.c:
  Auto merged
innobase/row/row0ins.c:
  Auto merged
innobase/row/row0mysql.c:
  Auto merged
innobase/row/row0sel.c:
  Auto merged
innobase/row/row0umod.c:
  Auto merged
innobase/row/row0upd.c:
  Auto merged
innobase/trx/trx0trx.c:
  Auto merged
innobase/ut/ut0dbg.c:
  Auto merged
innobase/ut/ut0mem.c:
  Auto merged
myisam/mi_dynrec.c:
  Auto merged
mysql-test/r/innodb.result:
  Auto merged
mysql-test/t/fulltext.test:
  Auto merged
mysql-test/t/rpl_rotate_logs.test:
  Auto merged
scripts/make_binary_distribution.sh:
  Auto merged
sql/ha_innodb.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/slave.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_show.cc:
  Auto merged
innobase/os/os0file.c:
  Merge with 4.0.20
  Ensure that we call F_UNLCK for files on which we call F_WRLCK.
  This is to ensure that this code will be portable accross most platforms.
myisam/ft_boolean_search.c:
  Merge with 4.0.20 (keep original file)
myisam/ft_parser.c:
  Merge with 4.0.20 (keep original file)
myisam/ftdefs.h:
  Merge with 4.0.20 (keep original file)

mysql-test/r/innodb.result

@@ -467,7 +467,7 @@ ERROR 23000: Duplicate entry 'test2' for key 2
 select * from t1;
 id	ggid	email	passwd
 1	this will work		
-4	test2		this will work
+3	test2		this will work
 select * from t1 where id=1;
 id	ggid	email	passwd
 1	this will work