problem on Windows/cygwin (BUG#668)

 - fixed a typo

into mysql.com:/space/my/mysql-4.0-build

  Add forgotten mutex_enter()

  Add forgotten mtr_commit()

  Fix error in previous push

  Fix bug: InnoDB could print that it cannot find a clustered index record if an update undo, purge, and a consistent read coincided, in rare cases it might also have returned a wrong row in a query

into mysql.com:/home/mysql_src/mysql-4.0

with 'head').
Test fix (this sync_with_master was nonsense).
Now all tests pass in 4.0 in autobuild.

into mysql.com:/home/mysql_src/mysql-4.0

More messages.
Testcase for bug 651.

  Cleanup
ha_innodb.cc, data0type.h:
  Make sure non-latin1 users can downgrade from 4.0.14 to an earlier version if they have not created DATA_BLOB column prefix indexes

  Cleanup; remove compiler warning on Windows

into mysql.com:/home/mysql_src/mysql-4.0

thd->enter_cond() and exit_cond(), so that the I/O thread accepts to stop
when it's waiting for relay log space.
Reset ignore_log_space_limit to 0 when the SQL thread terminates.

  Merge InnoDB-4.0.14: SAVEPOINT now implemented; InnoDB now accepts also column prefix keys; crashing bug in ON UPDATE CASCADE fixed; page checksum formula fixed

into mysql.com:/home/mysql_src/mysql-4.0

Could not add a testcase for this: if the test goes into a MASTER_POS_WAIT, it waits
until this terminates (even doing "connection other_con" to launch "stop slave" is blocked).
- In MASTER_POS_WAIT() don't test if the I/O slave is running, but if the SQL thread
is running.
- Some DBUG info for this bugfix.

if one is running many mysqlds through mysqld_multi, for example.
Without this option, on Linux one mysqld_safe process may kill
other mysqlds as well, if started using the same binary and path.

 - Added missing function name in checking for sem_init in posix4 libs on
   Solaris

into narttu.mysql.fi:/my/mysql-4.0

   define a different niceness level in my.cnf (Bug #627)

into mysql.com:/space/my/mysql-4.0-build

Item_extract needs special implementation for eq().
Item_func::eq doesn't work correctly because we have to compare 
Item_extract::int_type parameters also

We need to propagate this to 4.1

   to accept --socket option (Bug #592)

into mysql.com:/home/mysql_src/mysql-4.0

support issue with an unclear message which can have N reasons for appearing.
This should help us know at which point it failed, and get the errno when
my_open was involved (as the reason for the unclear message is often a
permission problem).
RESET SLAVE resets last_error and last_errno in SHOW SLAVE STATUS (without this,
rpl_loaddata.test, which is expected to generate an error in last_error, influenced
rpl_log_pos.test).
A small test update.
Added STOP SLAVE to mysql-test-run to get rid of several stupid error messages
which are printed while the master restarts and the slave attempts/manages to
connect to it and sends it nonsense binlog requests.

Added option --gdb
Free memory used by replicate_xxx and binglog_xxx options

into mysql.com:/home/mysql_src/mysql-4.0

we now make a distinction between if the master is < 3.23.57, 3.23 && >=57, and 4.x
(before the 2 3.23 were one). This is because in 3.23.57 we have a way to distinguish between
a Start_log_event written at server startup and one written at FLUSH LOGS, so we
have a way to know if the slave must drop old temp tables or not.
Change: mi->old_format was bool, now it's enum (to handle 3 cases). However, functions
which had 'bool old_format' as an argument have their prototypes unchanged, because
the old old_format == 0 now corresponds to the enum value BINLOG_FORMAT_CURRENT which
is equal to 0, so boolean tests are left untouched. The only case were we use mi->old_format
as an enum instead of casting it implicitly to a bool, is in Start_log_event::exec_event,
where we want to distinguish between the 3 possible enum values.