resulution of bug #46895.

            REVOKE/GRANT; ALTER EVENT.

The following statements support the CURRENT_USER() where a user is needed.
  DROP USER 
  RENAME USER CURRENT_USER() ...
  GRANT ... TO CURRENT_USER()
  REVOKE ... FROM CURRENT_USER()
  ALTER DEFINER = CURRENT_USER() EVENT
but, When these statements are binlogged, CURRENT_USER() just is binlogged
as 'CURRENT_USER()', it is not expanded to the real user name. When slave 
executes the log event, 'CURRENT_USER()' is expand to the user of slave 
SQL thread, but SQL thread's user name always NULL. This breaks the replication.

After this patch, All above statements are rewritten when they are binlogged.
The CURRENT_USER() is expanded to the real user's name and host.

Updated the certs to expire on 2015. 
Made sure they work with both yassl and openssl.

column is used for ORDER BY

Problem: filesort isn't meant for null length sort data
(e.g. char(0)), that leads to a server crash.

Fix: disregard sort order if sort data record length is 0 (nothing
to sort).

  in multitable delete/subquery

SQL_BUFFER_RESULT should not have an effect on non-SELECT 
statements according to our documentation.
Fixed by not passing it through to multi-table DELETE (similarly
to how it's done for multi-table UPDATE).

Rename method as to not hide a base.
Reorder attributes initialization.
Remove unused variable.
Rework code to silence a warning due to assignment used as truth value.

merging patches prepared for 5.0 to 5.1-bt. That caused a few changes in the test file

Define env. vars for both timeout settings
Also incorporated 5.0 patch into mtr version 1

--extended-insert

Help message changed to the same as in the 5.1 online 
documentation.

  Define env. vars for both timeout settings
  This patch is for 5.0 (mtr v1) and should replaces for 5.1 up

improving comments

      
WL#5182 is a follow-up to WL#5154, deprecating a few more options
and system variables.

printstack() being present

When Bug#47391 was fixed, no assumption was made that support
for Solaris 8 was needed. Solaris 8 lacks printstack(), and 
the build breaks because of this.

This patch adds a test for the presence of printstack() to
configure.in for 5.0, and uses HAVE_PRINTSTACK to make
decisions rather than the __sun define.

The 'rpl_get_master_version_and_clock' test verifies if the slave I/O
thread tries to reconnect to master when it tries to get the values of
the UNIX_TIMESTAMP, SERVER_ID from master under network disconnection.
So the master server is restarted for making the transient network
disconnection, during the period the COM_REGISTER_SLAVE failures are
produced in server log file when the slave I/O thread tries to
register on master.

To fix the problem, suppress COM_REGISTER_SLAVE failures in server log
file by mtr suppression, because they are expected.

MySQL's hash functions MD5 and SHA relied on the somewhat slow 
sprintf function to convert the digests to hex representations.
This patch replaces the sprintf with a specific and inline hex
conversion function.

Patch contributed by Jan Steemann.

NOTE: added TODO to the comments requested by reviewer during this
      merge.

should be exited before destroying the thread local storage.

When replicating from 4.1 master to 5.0 slave START SLAVE UNTIL can stop too late.
The necessary in calculating of the beginning of an event the event's length
did not correspond to the master's genuine information at the event's execution time.
That piece of info was changed at the event's relay-logging due to binlog_version<4 event
conversion by IO thread.

Fixed with storing the master genuine Query_log_event size into a new status
variable at relay-logging of the event. The stored info is extacted at the event
execution and participate further to caclulate the correct start position of the event
in the until-pos stopping routine.
The new status variable's algorithm will be only active when the event comes
from the master of version < 5.0 (binlog_version < 4).

sql_udf.cc

Detailed revision comments:

r6471 | calvin | 2010-01-16 01:43:27 +0200 (Sat, 16 Jan 2010) | 4 lines
branches/5.1: fix bug#49396: main.innodb test fails in embedded mode

Change replace_result by using $MYSQLD_DATADIR. Tested in both embedded
mode and normal server mode.

removed wrongly introduced strlen calls

Detailed revision comments:

r6492 | sunny | 2010-01-21 09:38:35 +0200 (Thu, 21 Jan 2010) | 1 line
branches/5.1: Add reference to bug#47621 in the comment.

Detailed revision comments:

r6489 | sunny | 2010-01-21 02:57:50 +0200 (Thu, 21 Jan 2010) | 2 lines
branches/5.1: Factor out test for bug#44030 from innodb-autoinc.test
into a separate test/result files.

Detailed revision comments:

r6488 | sunny | 2010-01-21 02:55:08 +0200 (Thu, 21 Jan 2010) | 2 lines
branches/5.1: Factor out test for bug#44030 from innodb-autoinc.test
into a separate test/result files.

Detailed revision comments:

r6424 | marko | 2010-01-12 12:22:19 +0200 (Tue, 12 Jan 2010) | 16 lines
branches/5.1: In innobase_initialize_autoinc(), do not attempt to read
the maximum auto-increment value from the table if
innodb_force_recovery is set to at least 4, so that writes are
disabled. (Bug #46193)

innobase_get_int_col_max_value(): Move the function definition before
ha_innobase::innobase_initialize_autoinc(), because that function now
calls this function.

ha_innobase::innobase_initialize_autoinc(): Change the return type to
void.  Do not attempt to read the maximum auto-increment value from
the table if innodb_force_recovery is set to at least 4.  Issue
ER_AUTOINC_READ_FAILED to the client when the auto-increment value
cannot be read.

rb://144 by Sunny, revised by Marko

Detailed revision comments:

r6422 | marko | 2010-01-12 11:34:27 +0200 (Tue, 12 Jan 2010) | 3 lines
branches/5.1: Non-functional change:
Make innobase_get_int_col_max_value() a static function.
It does not access any fields of class ha_innobase.

Detailed revision comments:

r6421 | jyang | 2010-01-12 07:59:16 +0200 (Tue, 12 Jan 2010) | 8 lines
branches/5.1: Fix bug #49238: Creating/Dropping a temporary table
while at 1023 transactions will cause assert. Handle possible
DB_TOO_MANY_CONCURRENT_TRXS when deleting metadata in
row_drop_table_for_mysql().

rb://220, approved by Marko