Problem 1:
When the 'Using index' optimization is used, the optimizer may still - after
cost-based optimization - decide to use another index in order to avoid using
a temporary table. But when this happens, the flag to the storage engine to 
read index only (not table) was still set. Fixed by resetting the flag in the 
storage engine and TABLE structure in the above scenario, unless the new index
allows for the same optimization.
Problem 2:
When a 'ref' access method was employed by cost-based optimizer, (when the column
is non-NULLable), it was assumed that it needed no initialization if 'quick' access
methods (since they are based on range scan). When ORDER BY optimization overrides 
the decision, however, it expects to have this initialized and hence crashes. 
Fixed in 5.1 (was fixed in 6.0 already) by initializing 'quick' even when there's 
'ref' access. 

mysql-test/r/order_by.result:
  Bug#46454: Test result.
mysql-test/t/order_by.test:
  Bug#46454: Test case.
sql/sql_select.cc:
  Bug#46454: 
  Problem 1 fixed in make_join_select()
  Problem 2 fixed in test_if_skip_sort_order()
sql/table.h:
  Bug#46454: Added comment to field.

- Remove offensive quotes.

                    column on partitioned table
      
      
An assertion 'ASSERT_COULUMN_MARKED_FOR_READ' is failed if the query 
is executed with index containing double column on partitioned table.
The problem is that assertion expects all the fields which are read,
to be in the read_set.
      
In this query only the field 'a' is in the readset as the tables in
the query are joined by the field 'a' and so the assertion fails 
expecting other field 'b'.
      
Since the function cmp() is just comparison of two parameters passed, 
the assertion is not required.
      
Fixed by removing the assertion in the double fields comparision
function and also fixed the index initialization to do ordered
index scan with RW LOCK which ensures all the fields from a key are in
the read_set.
 

Note: this bug is not reproducible with other datatypes because the
      assertion doesn't exist in comparision function for other 
      datatypes.

mysql-test/r/partition.result:
  Testcase for BUG#45816
mysql-test/t/partition.test:
  Testcase for BUG#45816
sql/field.cc:
  Removed the assertion ASSERT_COLUMN_MARED_FOR_READ in Field_double::cmp()
  function
sql/ha_partition.cc:
  Fixed index_int() method to make it initialize the read_set properly if
  ordered index scan with RW lock is requested.

The server shutdown and start code triggered the valgrind failures 
within nptl_pthread_exit_hack_handler on Ubuntu 9.04, x86 (but not amd64) 
in rpl_trigger.test file.

For fixing the bug, suppress valgrind failures within nptl_pthread_exit_hack_handler 
on Ubuntu 9.04, x86 (but not amd64). Because the server shutdown and start
code has been heavily used in mysql test set.

mysql-test/valgrind.supp:
  Add code for suppressing valgrind failures within nptl_pthread_exit_hack_handler on Ubuntu 9.04, x86 (but not amd64).

Install procedure does not copy *.inc files located under the mysql-test/t directory.
Therefore, this patch moves the rpl_trigger.inc to the mysql-test/include directory.

The test case fails sporadically on Windows while trying to overwrite an unused
binary log. The problem stems from the fact that MySQL on Windows does not
immediately unlock/release a file while the process that opened and closed it is
still running. In BUG 38603, this issue was circumvented by stopping the MySQL
process, copying the file and then restarting the MySQL process. 

Unfortunately, such facilities are not available in the 5.0.  Other approaches
such as stopping the slave and issuing change master do not work because the relay
log file and index are not closed when a slave is stopped. So to fix the problem,
we simply don't run on windows the part of the test that was failing.

http://lists.mysql.com/commits/53569

sql/ha_ndbcluster_binlog.cc:
  Remove extraneous mutex lock which could cause the server to deadlock.

were included in the configure tests. (Bug #46310)

engine to the partition_csv test. Also remove test case that was
duplicated. Fix connection procedure with the embedded server.

mysql-test/r/partition.result:
  Update test case result.
mysql-test/r/partition_csv.result:
  Update test case result.
mysql-test/t/partition.test:
  Move test cases to the partition_csv test.
mysql-test/t/partition_csv.test:
  Move tests from partition.test and remove duplicate.
  Tweaky connection procedure to work with embedded.

- Define and pass compile time path variables as pre-processor definitions to 
  mimic the makefile build.
- Set new CMake version and policy requirements explicitly.
- Changed DATADIR to MYSQL_DATADIR to avoid conflicting definition in 
  Platform SDK header ObjIdl.h which also defines DATADIR.

            when used with --tab

1) New syntax: added CHARACTER SET clause to the
  SELECT ... INTO OUTFILE (to complement the same clause in
  LOAD DATA INFILE).
  mysqldump is updated to use this in --tab mode.

2) ESCAPED BY/ENCLOSED BY field parameters are documented as
   accepting CHAR argument, however SELECT .. INTO OUTFILE
   silently ignored rests of multisymbol arguments.
   For the symmetrical behavior with LOAD DATA INFILE the
   server has been modified to fail with the same error:

     ERROR 42000: Field separator argument is not what is
                  expected; check the manual

3) Current LOAD DATA INFILE recognizes field/line separators
   "as is" without converting from client charset to data
   file charset. So, it is supposed, that input file of
   LOAD DATA INFILE consists of data in one charset and
   separators in other charset. For the compatibility with
   that [buggy] behaviour SELECT INTO OUTFILE implementation
   has been saved "as is" too, but the new warning message
   has been added:

     Non-ASCII separator arguments are not fully supported

   This message warns on field/line separators that contain
   non-ASCII symbols.


client/mysqldump.c:
  mysqldump has been updated to call SELECT ... INTO OUTFILE
  statement with a charset from the --default-charset command
  line parameter.
mysql-test/r/mysqldump.result:
  Added test case for bug #30946.
mysql-test/r/outfile_loaddata.result:
  Added test case for bug #30946.
mysql-test/t/mysqldump.test:
  Added test case for bug #30946.
mysql-test/t/outfile_loaddata.test:
  Added test case for bug #30946.
sql/field.cc:
  String conversion code has been moved from check_string_copy_error()
  to convert_to_printable() for reuse.
sql/share/errmsg.txt:
  New WARN_NON_ASCII_SEPARATOR_NOT_IMPLEMENTED message has been added.
sql/sql_class.cc:
  The select_export::prepare() method has been modified to:
  
    1) raise the ER_WRONG_FIELD_TERMINATORS error on multisymbol
       ENCLOSED BY/ESCAPED BY field arguments like LOAD DATA INFILE;
  
    2) warn with a new WARN_NON_ASCII_SEPARATOR_NOT_IMPLEMENTED
       message on non-ASCII field or line separators.
  
  The select_export::send_data() merhod has been modified to
  convert item data to output charset (see new SELECT INTO OUTFILE
  syntax). By default the BINARY charset is used for backward
  compatibility.
sql/sql_class.h:
  The select_export::write_cs field added to keep output
  charset.
sql/sql_load.cc:
  mysql_load has been modified to warn on non-ASCII field or
  line separators with a new WARN_NON_ASCII_SEPARATOR_NOT_IMPLEMENTED
  message.
sql/sql_string.cc:
  New global function has been added: convert_to_printable()
  (common code has been moved from check_string_copy_error()).
sql/sql_string.h:
  New String::is_ascii() method and new global convert_to_printable()
  function have been added.
sql/sql_yacc.yy:
  New syntax: added CHARACTER SET clause to the
  SELECT ... INTO OUTFILE (to complement the same clause in
  LOAD DATA INFILE). By default the BINARY charset is used for
  backward compatibility.

If using statement based replication (SBR), repeatedly calling
statements which are unsafe for SBR will cause a warning message
to be written to the error for each statement. This might lead
to filling up the error log and there is no way to disable this
behavior.

The solution is to only log these message (about statements unsafe
for statement based replication) if the log_warnings option is set.

For example:

SET GLOBAL LOG_WARNINGS = 0;
INSERT INTO t1 VALUES(UUID());
SET GLOBAL LOG_WARNINGS = 1;
INSERT INTO t1 VALUES(UUID());

In this case the message will be printed only once:

[Warning] Statement may not be safe to log in statement format.
          Statement: INSERT INTO t1 VALUES(UUID())

mysql-test/suite/binlog/r/binlog_stm_unsafe_warning.result:
  Add test case result for Bug#46265
mysql-test/suite/binlog/t/binlog_stm_unsafe_warning-master.opt:
  Make log_error value available.
mysql-test/suite/binlog/t/binlog_stm_unsafe_warning.test:
  Add test case for Bug#46265
sql/sql_class.cc:
  Print warning only if the log_warnings is enabled.

We disallow the partitioning of a log table. You could however
partition a table first, and then point logging to it. This is
not only against the docs, it also crashes the server.

We catch this case now.

mysql-test/r/partition.result:
  results for 40281
mysql-test/t/partition.test:
  test for 40281: show that trying to log to partitioned table fails rather
  to crash the server
sql/ha_partition.cc:
  Signal that we no longer support logging to partitioned tables,
  as per the docs.
sql/sql_partition.cc:
  Some commands like "USE ..." have no select, yet we may try
  to parse partition info after their execution if user set a
  partitioned table as log target. This shouldn't lead to a
  NULL-deref/crash.

The problem is that the C API function mysql_real_connect
only attempts to connect to the first IP address returned
for a hostname. This can be a problem if a hostname maps
to multiple IP address and the server is not bound to the
first one that is returned.

The solution is to augment mysql_real_connect so that it
attempts to connect to all IPv4 addresses that a domain
name maps to. The function goes over the list of address
until a successful connection is established.

No test case is provided as its not possible to test this
automatically with the current testing infrastructure.

sql-common/client.c:
  The client will try to connect to each IPv4 address from
  the list of addresses that hostname maps to until a successful
  connection is established or there are no more address.

in a conditional commentary at the new SELECT ... INTO
OUTFILE ... CHARACTER SET syntax has been updated to 5.1.38.

storage/innobase/Makefile.am

storage/innobase/Makefile.am:
  Remove the 'single' space character after include/lock0iter.h

Initialize LOCK_open as a adapative mutex on platforms where the
PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP macro is available. The flag
indicates that a thread should spin (busy wait) for some time on a
locked adaptive mutex before blocking (sleeping). It's intended to
to alleviate performance problems due to LOCK_open being a highly
contended mutex.

sql/mysqld.cc:
  Initialize LOCK_open as a adapative mutex.

   Check for "stack overrun" doesn't work, server crashes