client library only sets mysql->insert_id when query returned
no recordset. So the embedded library should behave the same way

There's currently no way of knowing the determinicity of an UDF.
And the optimizer and the sequence() UDFs were making wrong
assumptions about what the is_const member means.
Plus there was no implementation of update_system_tables()
causing the optimizer to overwrite the information returned by
the <udf>_init function.

Fixed by equating the assumptions about the semantics of 
is_const and providing a implementation of update_used_tables().
Added a TODO item for the UDF API change needed to make a better 
implementation.

into  polly.(none):/home/kaa/src/opt/mysql-5.0-opt

We do not have any executables in libmysql/release/ anymore.

into  polly.(none):/home/kaa/src/opt/mysql-5.0-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B30788-5.0-opt

Index lookup does not always guarantee that we can
simply remove the relevant conditions from the WHERE
clause. Reasons can be e.g. conversion errors, 
partial indexes etc. 
The optimizer was removing these parts of the WHERE 
condition without any further checking.
This leads to "false positives" when using indexes.
Fixed by checking the index reference conditions
(using WHERE) when using indexes with sub-queries.

into  moonbone.local:/work/31048-bug-5.0-opt-mysql

  Additional stack check for the bug#31048.

into  gleb.loc:/work/bk/5.0-opt

8bit escape characters, termination and enclosed characters
were silently ignored by SELECT INTO query, but LOAD DATA INFILE
algorithm is 8bit-clean, so data was corrupted during 
encoding.

into  mysql.com:/home/hf/work/mysql-5.0-opt

into  mysql.com:/home/hf/work/31868/my50-31868

into  mysql.com:/home/hf/work/31868/my41-31868

into  moonbone.local:/work/31048-bug-5.0-opt-mysql

into  moonbone.local:/work/31048-bug-5.0-opt-mysql

into  moonbone.local:/work/30384-bug-5.0-opt-mysql

led to creating corrupted index.

Corrected fix. The new method called prepare2 is added to the select_create
class. As all preparations are done by the select_create::prepare function
it doesn't do anything. Slightly changed algorithm of calling the 
start_bulk_insert function. Now it's called from the select_insert::prepare2
function when the SQL_BUFFER_RESULT flags is set.
The is_bulk_insert_mode flag is removed as it is not needed anymore.

This bug is actually two. The first one manifests itself on an EXPLAIN
SELECT query with nested subqueries that employs the filesort algorithm.
The whole SELECT under explain is marked as UNCACHEABLE_EXPLAIN to preserve
some temporary structures for explain. As a side-effect of this values of
nested subqueries weren't cached and subqueries were re-evaluated many
times. Each time buffer for filesort was allocated but wasn't freed because
freeing occurs at the end of topmost SELECT. Thus all available memory was
eaten up step by step and OOM event occur.
The second bug manifests itself on SELECT queries with conditions where
a subquery result is compared with a key field and the subquery itself also
has such condition. When a long chain of such nested subqueries is present
the stack overrun occur. This happens because at some point the range optimizer
temporary puts the PARAM structure on the stack. Its size if about 8K and
the stack is exhausted very fast.

Now the subselect_single_select_engine::exec function allows subquery result
caching when the UNCACHEABLE_EXPLAIN flag is set.
Now the SQL_SELECT::test_quick_select function calls the check_stack_overrun
function for stack checking purposes to prevent server crash.

bytes length.

The server has been modified to report warnings on truncation to
65536 bytes as usual.

crashes.

MySQL distributions contain a number of programs that are used only by
the MySQL test suite internally, i.e. they are not indended to be
invoked directly by a user. As a result, such programs are not
documented, do not have any built-in help or proper error reporting,
which may confuse users.

This patch fixes the problem with the following changes:
- mytest, libmysqltest and all references to them were removed from the
distribution since they are not used anymore
- bug25714 now displays an error message when run with incorrect
arguments or with the --help option
- mysql_client_test now does not call abort() in case of errors,
instead it does a clean exit() with a proper error status.

into  polly.(none):/home/kaa/src/opt/mysql-5.0-opt

disables the option explicitely.
Changed the option location in code so that --help will show it in
lexical option order.

This is for bug #26215: mysql command line client should not strip
comments from SQL statements

into  gleb.loc:/work/bk/5.0-opt

Comparison of a BIGINT NOT NULL column with a constant arithmetic
expression that evaluates to NULL caused error 1048: "Column '...'
cannot be null".

Made convert_constant_item() check if the constant expression is NULL
before attempting to store it in a field. Attempts to store NULL in a
NOT NULL field caused query errors.

into  mysql.com:/home/hf/work/31158/my50-31158

into  mysql.com:/home/hf/work/31158/my41-31158

into  mysql.com:/home/hf/work/31158/my50-31158

into  mysql.com:/home/hf/work/31158/my50-31158

into  polly.(none):/home/kaa/src/opt/mysql-5.0-opt

checked for each record'

The problem was in incorrectly calculated length of the buffer used to
store a hexadecimal representation of an index map in
select_describe(). This could result in buffer overrun and stack
corruption under some circumstances.

Fixed by correcting the calculation.

into  mysql.com:/home/gluh/MySQL/Merge/5.0-opt

Implement neccessary shared lock structure for table locks.
This is the backport of bug26241 fix.

into  magare.gmz:/home/kgeorge/mysql/autopush/B31928-5.0-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.0-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.0-opt

into  mysql.com:/home/gluh/MySQL/Merge/4.1-opt