OpenBSD releases.

Apply patch from Brad Smith, thanks!

Some of the test cases reference to binlog position and
these position numbers are written into result explicitly.
It is difficult to maintain if log event format changes. 

There are a couple of cases explicit position number appears, 
we handle them in different ways
A. 'CHANGE MASTER ...' with MASTER_LOG_POS or/and RELAY_LOG_POS options
   Use --replace_result to mask them.
B. 'SHOW BINLOG EVENT ...'
   Replaced by show_binlog_events.inc or wait_for_binlog_event.inc. 
   show_binlog_events.inc file's function is enhanced by given
   $binlog_file and $binlog_limit.
C. 'SHOW SLAVE STATUS', 'show_slave_status.inc' and 'show_slave_status2.inc'
   For the test cases just care a few items in the result of 'SHOW SLAVE STATUS',
   only the items related to each test case are showed.
   'show_slave_status.inc' is rebuild, only the given items in $status_items
   will be showed.
   'check_slave_is_running.inc' and 'check_slave_no_error.inc'
   and 'check_slave_param.inc' are auxiliary files helping
   to show running status and error information easily.


mysql-test/extra/binlog_tests/binlog.test:
  It only cares whether current binlog file index is changed, so it is ok
  with 'show_master_status.inc' instead of 'show mater status'.
mysql-test/extra/binlog_tests/blackhole.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/extra/rpl_tests/rpl_deadlock.test:
  Use 'check_slave_is_running.inc' instead of 'show_slave_status2.inc'.
mysql-test/extra/rpl_tests/rpl_extraMaster_Col.test:
  Use 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/extra/rpl_tests/rpl_extraSlave_Col.test:
  Use 'wait_for_slave_sql_error.inc' and 'ait_for_slave_sql_error_and_skip.inc' instead of 'show slave status'.
mysql-test/extra/rpl_tests/rpl_flsh_tbls.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/extra/rpl_tests/rpl_get_master_version_and_clock.test:
  It is need now to give a error number, so use 'wait_for_slave_io_to_stop.inc'
  instead of 'wait_for_slave_io_error.inc'.
mysql-test/extra/rpl_tests/rpl_insert_delayed.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/extra/rpl_tests/rpl_log.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
  se 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/extra/rpl_tests/rpl_max_relay_size.test:
  se 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/extra/rpl_tests/rpl_ndb_apply_status.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/extra/rpl_tests/rpl_reset_slave.test:
  Use 'show_slave_status.inc' instead of 'show_slave_status2.inc' statement.
  Use 'check_slave_no_error.inc' to simplify the check that there is no error.
mysql-test/extra/rpl_tests/rpl_row_basic.test:
  Use 'check_slave_is_running.inc' to verify that Slave threads are running well.
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
mysql-test/extra/rpl_tests/rpl_row_tabledefs.test:
  Use 'show_slave_error_status_and_skip.inc' instead of 'show slave status'.
mysql-test/include/check_slave_is_running.inc:
  To make sure both sql and io thread are running well. If not, the test will be aborted.
mysql-test/include/check_slave_no_error.inc:
  To make sure both sql and io thread have no error. If not, the test will be aborted.
mysql-test/include/get_relay_log_pos.inc:
  According to the position of a log event in master binlog file,
  find the peer position of a log event in relay log file.
mysql-test/include/rpl_stmt_seq.inc:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/include/show_binlog_events.inc:
  Add two options $binlog_file and $binlog_limit for showing binlog events from different binlog files or/and given different limits on position or row number.
mysql-test/include/show_rpl_debug_info.inc:
  Add 'SELECT NOW()' in the debug information.
mysql-test/include/show_slave_status.inc:
  It's more clean and tidy Only the given columns of slave status are printed.
mysql-test/include/test_fieldsize.inc:
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave stutus'.
mysql-test/include/wait_for_binlog_event.inc:
  Use show_rpl_debug_info.inc instead of 'SHOW BINLOG EVENTS'.
mysql-test/include/wait_for_slave_io_error.inc:
  Add $slave_io_errno and $show_slave_io_error, it waits only a given error.
mysql-test/include/wait_for_slave_param.inc:
  Use die instead of exit.
mysql-test/include/wait_for_slave_sql_error.inc:
  Add $slave_sql_errno and $show_slave_sql_error, it waits only a given error.
mysql-test/include/wait_for_status_var.inc:
  Use die instead of exit.
mysql-test/r/flush_block_commit_notembedded.result:
  It checks whether somethings are binlogged, so we using 'show_binlog_event.inc' instead of 'show master status'.
mysql-test/r/multi_update.result:
  It checks whether somethings are binlogged, so we using 'show_binlog_event.inc' instead of 'show master status'.
mysql-test/suite/binlog/r/binlog_innodb.result:
  It checks whether somethings are binlogged, so we using 'show_binlog_event.inc' instead of 'show master status'.
mysql-test/suite/binlog/r/binlog_row_binlog.result:
  Position in the result of 'show master status' is replaced by '#'.
mysql-test/suite/binlog/r/binlog_stm_binlog.result:
  Position in the result of 'show master status' is replaced by '#'.
mysql-test/suite/binlog/t/binlog_innodb.test:
  It checks whether somethings are binlogged, so we use 'show_binlog_event.inc' instead of 'show master status'.
mysql-test/suite/binlog/t/binlog_stm_binlog.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/bugs/r/rpl_bug36391.result:
  Position in the result of 'show master status' is replaced by '#'.
mysql-test/suite/bugs/t/rpl_bug12691.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/bugs/t/rpl_bug36391.test:
  'show master status' is replaced by 'show_master_status.inc'.
  Position in the result of 'show master status' is replaced by '#'.
mysql-test/suite/engines/funcs/r/rpl_000015.result:
  It checks whether somethings are binlogged, 
  so we using 'show_binlog_event.inc' instead of 'show master status'.
mysql-test/suite/engines/funcs/t/rpl_000015.test:
  Use 'check_slave_is_running.inc' to verify that Slave threads are running well.
mysql-test/suite/engines/funcs/t/rpl_REDIRECT.test:
  Use 'query_vertical SHOW SLAVE STATUS' instead of 'show slave status'.
  There is no status columns in the result file, for no slave exists on master's server.
mysql-test/suite/engines/funcs/t/rpl_change_master.test:
  This test just care whether Read_Master_Log_Pos is equal to Exec_Master_Log_Pos after 'CHANGE MASTER ..'. So 'show slave status' is removed and just check the value of Read_Master_Log_Pos and Exec_Master_Log_Pos.
mysql-test/suite/engines/funcs/t/rpl_empty_master_crash.test:
  We doesn't really need the statement.
mysql-test/suite/engines/funcs/t/rpl_flushlog_loop.test:
  Just show Relay_Log_File, running status and error informations.
  Use 'check_slave_is_running.inc' to verify that Slave threads are running well.
mysql-test/suite/engines/funcs/t/rpl_loaddata_s.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/engines/funcs/t/rpl_log_pos.test:
  Mask the explicit positions in the result file.
  Use 'check_slave_no_error.inc' to simplify the check that there is no error.
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave stutus'.
mysql-test/suite/engines/funcs/t/rpl_rbr_to_sbr.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/engines/funcs/t/rpl_row_drop.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/engines/funcs/t/rpl_row_inexist_tbl.test:
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave stutus'.
mysql-test/suite/engines/funcs/t/rpl_row_until.test:
  Use 'check_slave_param.inc' to check whether SQL Thread stop at a right position, and use binlog position variables instead of explicit number in the 'CHANGE MASTER' statements.
  
  Mask the explicit binary log positions in the result file.
mysql-test/suite/engines/funcs/t/rpl_server_id1.test:
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave stutus'.
  Use 'check_slave_no_error.inc' to simplify the check that there is no error.
mysql-test/suite/engines/funcs/t/rpl_server_id2.test:
  It doesn't really need in this test.
mysql-test/suite/engines/funcs/t/rpl_slave_status.test:
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave stutus'.
mysql-test/suite/engines/funcs/t/rpl_switch_stm_row_mixed.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/manual/t/rpl_replication_delay.test:
  Use 'show_slave_status.inc' instead of 'show slave status'.
mysql-test/suite/parts/t/rpl_partition.test:
  Use 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/suite/rpl/include/rpl_mixed_ddl.inc:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/rpl/include/rpl_mixed_dml.inc:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/rpl/t/rpl_000015.test:
  Use 'show_slave_status.inc' instead of 'show_slave_status2.inc'.
mysql-test/suite/rpl/t/rpl_binlog_grant.test:
  Use 'wait_for_binlog_event.inc' instead of 'show binlog events' statement.
mysql-test/suite/rpl/t/rpl_bug33931.test:
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave stutus'.
mysql-test/suite/rpl/t/rpl_change_master.test:
  This test just care whether Read_Master_Log_Pos is equal to Exec_Master_Log_Pos after 'CHANGE MASTER ..'. So 'show slave status' is removed and just check the value of Read_Master_Log_Pos and Exec_Master_Log_Pos.
mysql-test/suite/rpl/t/rpl_critical_errors.test:
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave stutus'.
mysql-test/suite/rpl/t/rpl_dual_pos_advance.test:
  Mask the explicit position numbers in result file.
  It is restricted running on SBR, for it want to binlog 'set @A=1' statement.
mysql-test/suite/rpl/t/rpl_empty_master_crash.test:
  It doesn't need in this test.
mysql-test/suite/rpl/t/rpl_flushlog_loop.test:
  UUse 'check_slave_is_running.inc' and 'show_slave_status.inc' instead of 'show slave status' statement.
mysql-test/suite/rpl/t/rpl_get_master_version_and_clock.test:
  Use 'wait_for_slave_io_error.inc' to wait the given io thread error happening.
mysql-test/suite/rpl/t/rpl_grant.test:
  It doesn't need in this test.
mysql-test/suite/rpl/t/rpl_incident.test:
  Use 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/suite/rpl/t/rpl_known_bugs_detection.test:
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave stutus'.
mysql-test/suite/rpl/t/rpl_loaddata_fatal.test:
  Use 'wait_for_slave_sql_error_and_skip.inc' to wait the given sql thread error happening and then skip the event. There is no need to print the result of 'show slave stutus'.
mysql-test/suite/rpl/t/rpl_log_pos.test:
  Use 'wait_for_slave_io_error.inc' to wait the given io thread error happening.
  There is no need to print the result of 'show slave status'.
mysql-test/suite/rpl/t/rpl_rbr_to_sbr.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/rpl/t/rpl_replicate_do.test:
  Use 'show_slave_status.inc' instead of 'show slave status'.
mysql-test/suite/rpl/t/rpl_rotate_logs.test:
  Use 'show_slave_status.inc' instead of 'show_slave_status2.inc'.
mysql-test/suite/rpl/t/rpl_row_basic_11bugs.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/rpl/t/rpl_row_create_table.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/rpl/t/rpl_row_drop.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/rpl/t/rpl_row_until.test:
  Use 'check_slave_param.inc' to check whether SQL Thread stop at a right position, and use binlog position variables instead of explicit number in the 'CHANGE MASTER' statements.
mysql-test/suite/rpl/t/rpl_skip_error.test:
  Use 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/suite/rpl/t/rpl_slave_load_remove_tmpfile.test:
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave status'.
mysql-test/suite/rpl/t/rpl_slave_skip.test:
  Use 'check_slave_param.inc' to check whether SQL Thread stop at a right position, and mask the explicit position number in the 'CHANGE MASTER' statements.
mysql-test/suite/rpl/t/rpl_sp.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/suite/rpl/t/rpl_ssl.test:
  Use 'show_slave_status.inc' instead of 'show slave status'.
mysql-test/suite/rpl/t/rpl_ssl1.test:
  Use 'show_slave_status.inc' instead of 'show slave status'.
mysql-test/suite/rpl/t/rpl_stm_until.test:
  Use 'check_slave_param.inc' to check whether SQL Thread stop at a right position, and use binlog position variables instead of explicit number in the 'CHANGE MASTER' statements.
mysql-test/suite/rpl/t/rpl_temporary_errors.test:
  Use 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/suite/rpl_ndb/t/rpl_ndb_basic.test:
  Use 'wait_for_slave_sql_error.inc' to wait the given sql thread error happening.
  There is no need to print the result of 'show slave status'.
mysql-test/suite/rpl_ndb/t/rpl_ndb_circular.test:
  Use 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/suite/rpl_ndb/t/rpl_ndb_circular_simplex.test:
  Use 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/suite/rpl_ndb/t/rpl_ndb_idempotent.test:
  Use 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/suite/rpl_ndb/t/rpl_ndb_multi.test:
  Mask master_log_pos and master_log_file
mysql-test/suite/rpl_ndb/t/rpl_ndb_sync.test:
  Use 'check_slave_is_running.inc' instead of 'show slave status' statement.
mysql-test/suite/rpl_ndb/t/rpl_truncate_7ndb.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/t/alter_table-big.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/t/create-big.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/t/ctype_cp932_binlog_stm.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.
mysql-test/t/flush_block_commit_notembedded.test:
  It checks whether somethings are binlogged, 
  so we using 'show_binlog_event.inc' instead of 'show master status'.
mysql-test/t/multi_update.test:
  It checks whether somethings are binlogged, 
  so we using 'wait_binlog_event.inc' instead of 'show master status'.
mysql-test/t/sp_trans_log.test:
  Use 'show_binlog_events.inc' instead of 'show binlog events' statement.

            data directory name command

The check_db_name function has been modified to validate tails of
#mysql50#-prefixed database names for compliance with MySQL 5.0
database name encoding rules (the check_table_name function call
has been reused).


mysql-test/r/renamedb.result:
  Updated test case.
mysql-test/r/upgrade.result:
  Test case for bug #53804.
mysql-test/t/renamedb.test:
  Updated test case.
mysql-test/t/upgrade.test:
  Test case for bug #53804.
sql/mysql_priv.h:
  Bug #53804: serious flaws in the alter database .. upgrade
              data directory name command
  
  The check_mysql50_prefix has been added.
sql/sql_table.cc:
  Bug #53804: serious flaws in the alter database .. upgrade
              data directory name command
  
  - The check_mysql50_prefix has been added.
  - The check_n_cut_mysql50_prefix function has been refactored
  to share code with new check_mysql50_prefix function.
sql/table.cc:
  Bug #53804: serious flaws in the alter database .. upgrade
              data directory name command
  
  The check_db_name function has been modified to validate tails of
  #mysql50#-prefixed database names for compliance with MySQL 5.0
  database name encoding rules.

sql/ha_partition.cc:
  Bug#49477, added safety that a partitioned table cannot be
  temporary.

Problem: The test case mysqldump reads a file that must
be world-readable. The test did not force the file to be
world-readable, so if the tree was branched with a umask
of 0077, the test would fail.
Fix: chmod the file.


mysql-test/t/mysqldump.test:
  Added chmod so that the file is guaranteed to be world-readable.

Server crashes on 64bit linux with 'double free or corruption'
message, on 32bit mysql-test-run silently fails on bootstrap
stage. The problem is that FreeState() is called twice
for init_settings struct in _db_end_ function.
The fix is to remove superfluous FreeState() call.
Additional fix:
fixed discrepancy of result file when
debug & valgrind options are enabled
for MTR.

dbug/dbug.c:
  The problem is that FreeState() is called twice
  for init_settings struct in _db_end_ function.
  The fix is to remove superfluous FreeState() call.
mysql-test/r/variables_debug.result:
  fixed discrepancy of result file when
  debug & valgrind options are enabled
  for MTR.
mysql-test/t/variables_debug.test:
  fixed discrepancy of result file when
  debug & valgrind options are enabled
  for MTR.
sql/set_var.cc:
  fixed discrepancy of result file when
  debug & valgrind options are enabled
  for MTR.

Bug #50087 Interval arithmetic for Event_queue_element is not portable.

Subtraction of two unsigned months yielded a (very large) positive value.
Conversion of this to a signed value was not necessarily well defined.
              
Solution: do the subtraction on signed values.



mysql-test/r/events_scheduling.result:
  Add test case.
mysql-test/t/events_scheduling.test:
  Add test case.
sql/event_data_objects.cc:
  Convert month to signed before doing the subtraction.

Analysis showed that in case of accessing I_S table
ROUTINES we perform unnecessary allocations
with get_field() function for every processed row that
in their turn causes significant memory growth.
the fix is to avoid use of get_field().


sql/sql_show.cc:
  Functions store_schema_proc() are changed
  to avoid use of get_field() function.

mode
      
Post-push fix after backporting the patch to 5.1-bugteam:

  1 - changed the name of some variables to be equivalent to pe.
  2 - fixed that patch to mark a statement as unsafe when both a
  self-logging eng. and regular eng. are accessed and one of them
  is updated.

Post-fix: Updated a test case after the patch for BUG#50410,
because the patch makes ndb to run in the row format and as
such unsafe warning messages are not printed out.

            ha_myisam::index_first(uchar*)") at assert.c:81

Single-table DELETE crash/assertion similar to single-table
UPDATE bug 14272.

Same resolution as for the bug 14272:
Don't run index scan when we should use quick select.
This could cause failures because there are table handlers (like federated)
that support quick select scanning but do not support index scanning.


mysql-test/r/delete.result:
  Test case for bug #53450.
mysql-test/t/delete.test:
  Test case for bug #53450.
sql/sql_delete.cc:
  Bug #53450: Crash / assertion "virtual int
              ha_myisam::index_first(uchar*)") at assert.c:81
  
  The mysql_delete function has been modified to not to use
  init_read_record_idx instead of init_read_record for the
  quick select.

MTR sporadically reported that rpl_do_grant does not
clean up after itself.

We fix this by backporting BUG 50984 fix. This deploys
missing synchronization between master and slave.

Additionally, it also fixes the check_testcase for
rpl_tmp_table_and_DDL.

      NULL from outer join query
      
      Problem: optimising MIN/MAX() queries without GROUP BY clause
      by replacing the aggregate expression with a constant, we may set it
      to NULL disregarding the fact that there may be outer joins involved.
      
      Fix: don't replace MIN/MAX() with NULL if there're outer joins.
      
      Note: the fix itself is just
      - if (!count)
      + if (!count && !outer_tables)
          set to NULL
      
      The rest of the patch eliminates repeated code to improve speed
      and for easy maintenance of the code.


mysql-test/r/group_by.result:
          Fix for bug#52051: Aggregate functions incorrectly returns
          NULL from outer join query
            - test result.
mysql-test/t/group_by.test:
          Fix for bug#52051: Aggregate functions incorrectly returns
          NULL from outer join query
            - test case.
sql/opt_sum.cc:
          Fix for bug#52051: Aggregate functions incorrectly returns
          NULL from outer join query
            - optimising MIN/MAX() queries without GROUP BY clause by
          replacing them with a constant, take into account that
          there're may be outer joins involved.
            - repeated code for MIN/MAX optimization in the opt_sum_query()
          eliminated by introducing new functions that read MIN/MAX values
          using index and combining MIN/MAX cases to one.

update statements
      
Only SELECT statements report any examined rows in the slow
log. Slow UPDATE, DELETE and INSERT statements report 0 rows
examined, unless the statement has a condition including a
SELECT substatement.
      
This patch adds counting of examined rows for the UPDATE and
DELETE statements. An INSERT ... VALUES statement will still 
not report any rows as examined.



sql/sql_class.h:
  Added more docs for THD::examined_row_count.
sql/sql_delete.cc:
  Add incrementing thd->examined_row_count.
sql/sql_update.cc:
  Add incrementing thd->examined_row_count.

Problem: The rpl_ndb did not set binlog_format explicitly. Since
the default is binlog_format=statement, it means that the suite
ran with that. ndb does not support binlog_format=statement,
and many tests were skipped because they sourced
include/have_binlog_format_row_or_mixed.inc
Fix: set binlog_format=row explicitly in the configuration file
for the rpl_ndb suite.


Makefile.am:
  Removed duplicate run of rpl_ndb suite with binlog_format=row.
  Now that rpl_ndb is run with binlog_format=row by default, this
  run that explicitly changes to binlog_format=row is not needed,
  because it is covered by the following run.
mysql-test/suite/rpl_ndb/my.cnf:
  cluster only supports binlog_format=row.
mysql-test/suite/rpl_ndb/r/rpl_ndb_stm_innodb.result:
  updated result file
mysql-test/suite/rpl_ndb/t/rpl_ndb_stm_innodb.test:
  This test is supposed to use binlog_format=STATEMENT on
  master. It uses innodb on master, so statement format is
  supported.

      
MySQL handles the join syntax "JOIN ... USING( field1,
... )" and natural joins by building the same parse tree as
a corresponding join with an "ON t1.field1 = t2.field1 ..."
expression would produce. This parse tree was not cleaned up
properly in the following scenario. If a thread tries to
lock some tables and finds that the tables were dropped and
re-created while waiting for the lock, it cleans up column
references in the statement by means a per-statement free
list. But if the statement was part of a stored procedure,
column references on the stored procedure's free list
weren't cleaned up and thus contained pointers to freed
objects.
      
Fixed by adding a call to clean up the current prepared
statement's free list.

This is a backport from MySQL 5.1

remember range endpoints

The Loose Index Scan optimization keeps track of a sequence
of intervals. For the current interval it maintains the
current interval's endpoints. But the maximum endpoint was
not stored in the SQL layer; rather, it relied on the
storage engine to retain this value in-between reads. By
coincidence this holds for MyISAM and InnoDB. Not for the
partitioning engine, however.

Fixed by making the key values iterator 
(QUICK_RANGE_SELECT) keep track of the current maximum endpoint.
This is also more efficient as we save a call through the
handler API in case of open-ended intervals.

The code to calculate endpoints was extracted into 
separate methods in QUICK_RANGE_SELECT, and it was possible to
get rid of some code duplication as part of fix.

that generated multiple result sets (such as a stored procedure or a
multi-statement command) would leave the connection unusable. (Bug #42373)

A side-effect of this bug fix is to make MYSQL_INIT_COMMAND settings ignored
when connecting from within the server, but none of the existing mechanisms
for connecting from within the server use or need to set the initial command.

Backport of the patch for 5.1-bugteam.

MYSQL_BIN_LOG m_table_map_version member and it's associated 
functions were not used in the logic of binlogging and replication,
this patch removed all related code.

sql/log.cc:
  removed unused m_table_map_version variable and functions
sql/log.h:
  removed unused m_table_map_version variable and functions
sql/log_event.h:
  Removed unused LOG_EVENT_UPDATE_TABLE_MAP_VERSION_F flag
sql/sql_class.cc:
  Removed unused LOG_EVENT_UPDATE_TABLE_MAP_VERSION_F flag
sql/sql_load.cc:
  Removed unused LOG_EVENT_UPDATE_TABLE_MAP_VERSION_F flag
sql/table.cc:
  removed unused table_map_version variable
sql/table.h:
  removed unused table_map_version variable

When using a non-transactional table (t1) on the master 
and with autocommit disabled, no COMMIT is recorded 
in the binary log ending the statement. Therefore, if 
the slave has t1 in a transactional engine, then it will 
be as if a transaction is started but never ends. This is
actually BUG#29288 all over again.

We fix this by cherrypicking the cset for BUG#29288 which
was pushed to a later mysql version. The revision picked
was: mats@sun.com-20090923094343-bnheplq8n95opjay .

Additionally, a test case for covering the scenario depicted
in the bug report is included in this cset.

The fix actually reverts the change introduced
by the patch for bug 51494.
The fact is that patches for bugs 52177&48419
fix bugs 51194&50575 as well.



mysql-test/r/innodb_mysql.result:
  test case
mysql-test/t/innodb_mysql.test:
  test case
sql/sql_select.cc:
  reverted wrong fix for bug 51494

            truncates text/blob to 766 chars

mysqldump and SELECT ... INTO OUTFILE truncated long BLOB/TEXT
values to size of 766 bytes (MAX_FIELD_WIDTH or 255 * 3 + 1).

The select_export::send_data method has been modified to
reallocate a conversion buffer for long field data.


mysql-test/r/mysqldump.result:
  Test case for bug #53088.
mysql-test/r/outfile_loaddata.result:
  Test case for bug #53088.
mysql-test/t/mysqldump.test:
  Test case for bug #53088.
mysql-test/t/outfile_loaddata.test:
  Test case for bug #53088.
sql/sql_class.cc:
  Bug #53088: mysqldump with -T & --default-character-set set
              truncates text/blob to 766 chars
  
  The select_export::send_data method has been modified to
  reallocate a conversion buffer for long field data.

greedy_search optimizer_search_depth=0

The algorithm inside restore_prev_nj_state failed to
properly update the counters within the NESTED_JOIN
tree. The counter was decremented each time a table in the
node was removed from the QEP, the correct thing to do being
only to decrement it when the last table in the child node
was removed from the plan. This lead to node counters
getting negative values and the plan thus appeared
impossible. An assertion caught this.

Fixed by not recursing up the tree unless the last table in
the join nest node is removed from the plan

Bug#53417 my_getwd() makes assumptions on the buffer sizes which not always hold true
      
The mysys library contains many functions for rewriting file paths. Most of these
functions makes implicit assumptions on the buffer sizes they write to. If a path is put
in my_realpath() it will propagate to my_getwd() which assumes that the buffer holding
the path name is greater than 2. This is not true in cases.
      
In the special case where a VARBIN_ITEM is passed as argument to the LOAD_FILE function
this can lead to a crash.
      
This patch fixes the issue by introduce more safe guards agaist buffer overruns.

The test was used to fail because of 
 UPDATE t3,t4 SET t3.a=t4.a + bug27417(1);
did not prescribe the order of two row operations implied by the update.

Fixed with forcing the order with adding a where condition w/o
affecting the former bug fixes logics.

mysql-test/extra/binlog_tests/mix_innodb_myisam_side_effects.test:
  implemented the bug page suggestion to make a test deterministic.
mysql-test/suite/binlog/r/binlog_row_mix_innodb_myisam.result:
  results are updated and (!) corrected.
mysql-test/suite/binlog/r/binlog_stm_mix_innodb_myisam.result:
  results are updated

This is the 5.1 merge and extension of the fix.
The server was happily accepting paths in table name in all places a table
name is accepted (e.g. a SELECT). This allowed all users that have some 
privilege over some database to read all tables in all databases in all
mysql server instances that the server file system has access to.
Fixed by :
1. making sure no path elements are allowed in quoted table name when
constructing the path (note that the path symbols are still valid in table names
when they're properly escaped by the server).
2. checking the #mysql50# prefixed names the same way they're checked for
path elements in mysql-5.0.