post push fix

Updated partition_symlink since different error behavior
if embedded (or not partitioned)

Typo fixed.
No test case as we actually don't use rtree_get_first() 
and rtree_get_next() at present.

Problem: data consistency check (maximum record length) for a correct
MyISAM table with CHECKSUM=1 and ROW_FORMAT=DYNAMIC option 
may fail due to wrong inner MyISAM parameter. In result we may 
have the table marked as 'corrupted'. 

Fix: properly set MyISAM maximum record length parameter.

Dumping information about locks in use by sending a SIGHUP signal
to the server or by invoking the "mysqladmin debug" command may
lead to a server crash in debug builds or to undefined behavior in
production builds.

The problem was that a mutex that protects a lock object (THR_LOCK)
might have been destroyed before the lock object was actually removed
from the list of locks in use, causing a race condition with other
threads iterating over the list. The solution is to destroy the mutex
only after removing lock object from the list.

plugin_dir option backported from 5.1

            
            test_if_data_home_dir fixed to look into real path.
            Checks added to mi_open for symlinks into data home directory.

per-file messages:
        include/my_sys.h
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          my_is_symlink interface added
        include/myisam.h
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          myisam_test_invalid_symlink interface added
        myisam/mi_check.c
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          mi_open_datafile calls modified
        myisam/mi_open.c
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          code added to mi_open to check for symlinks into data home directory.
          mi_open_datafile now accepts 'original' file path to check if it's
          an allowed symlink.
        myisam/mi_static.c
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          myisam_test_invlaid_symlink defined
        myisam/myisamchk.c
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          mi_open_datafile call modified
        myisam/myisamdef.h
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          mi_open_datafile interface modified - 'real_path' parameter added
        mysql-test/r/symlink.test
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          error codes corrected as some patch now rejected pointing inside datahome
        mysql-test/r/symlink.result
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          error messages corrected in the result
        mysys/my_symlink.c
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          my_is_symlink() implementsd
          my_realpath() now returns the 'realpath' even if a file isn't a symlink
        sql/mysql_priv.h
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          test_if_data_home_dir interface
        sql/mysqld.cc
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          myisam_test_invalid_symlik set with the 'test_if_data_home_dir'
        sql/sql_parse.cc
          Bug#32167 another privilege bypass with DATA/INDEX DIRECTORY.
          
          error messages corrected
          test_if_data_home_dir code fixed

add'l portability fixes

portability fixes / cleanup

Bug#37531, Bug#36941, Bug#36941, Bug#36942, Bug#38185.

Also include test case from Bug 34300 which was left out from earlier snapshot
(5.1-ss2387).

Also include fix for Bug #29507, "TRUNCATE shows to many rows effected", since
the fix for Bug 37531 depends on it.

post push fix for bug#20129, test failed due to non existing
source files.

created at least some files and that they are correct.

Send_field.org_col_name has broken value on secondary execution.
It happens when result field is created from the field which belongs to view
due to forgotten assignment of some Send_field attributes. 
The fix:
set Send_field.org_col_name,org_table_name with correct value during Send_field intialization.

Bug #35602 "Failed to read auto-increment value from storage engine" with
Innodb

The test for REPLACE was an error of ommission since it's classified as
a simple INSERT. For REPLACE statements we don't acquire the special
AUTOINC lock for AUTOINC_NEW_STYLE_LOCKING with this fix.

Bug#36600 and Bug#36793:

Bug #36600 SHOW STATUS takes a lot of CPU in buf_get_latched_pages_number

Fix by removing the Innodb_buffer_pool_pages_latched variable from SHOW
STATUS output in non-UNIV_DEBUG compilation.

Bug #36793 rpl_innodb_bug28430 fails on Solaris

This is a back port from branches/zip. This code has been tested on a
big-endian machine too.

Bug #36278 Data_free in SHOW TABLE STATUS for InnoDB is in kilobytes

Change the fix for Bug 32440 to show bytes instead of kilobytes in
INFORMATION_SCHEMA.TABLES.DATA_FREE.

INSTALL PLUGIN and UNINSTALL PLUGIN worked with statement-based and
mixed-mode replication only, but not with row-based replication.

There is no statement-based replication of these statements.
But there was row-based replication of the inserts and deletes
to and from the mysql.plugin table.

The fix is to suppress binlogging during insert and delete to
and from the mysql.plugin table.