Ability to stop mysql-test-run.pl temporary (useful for them who run buildbot slave on thier work computers)

    mysqlslap: setting --engine does not get replicated
    http://bugs.mysql.com/bug.php?id=46967

and
    mysqlslap: specifying --engine and --create does not
    work with --engine=<storage_engine>:<option>
    https://bugs.launchpad.net/maria/+bug/429773

Problems were that an --engine=<storage_engine> was translated
to a "set storage_engine = <storage_engine>", wich is _not_
replicated. A --engine=<storage_engine>:<option> was not always
properly parsed and in some cases crashed.

Fixed by eliminating "set storage_engine = ..." and adding
proper DDL generation. Initialized an unitialized buffer to
prevent crashes and fixed to use proper pointer for in
case of --engine=<storage_engine>:<option> being the last
element in list of --engines.

Also cleaned up code for better readability.

Q: Should MySQL's replication actually replicate a
   "set storage_engine = ..." command or not?
A: No it should not. It is documented here:
   http://dev.mysql.com/doc/refman/5.1/en/replication-features-variables.html
   ...
   "The storage_engine system variable is not replicated, which is a
   good thing for replication between different storage engines." ...

Before the patch, mysqlslap was behaving this way:

+-------------------------------+--------+-------------+
|                               | single | replication |
+-------------------------------+--------+-------------+
| Before patch                                         | 
+-------------------------------+--------+-------------+
| --engine[1]                                          |
+-----+-------------------------+--------+-------------+
| 1.1 | eng1                    |  OK    |   Not OK    |
| 1.2 | eng1,eng2               |  OK    |   Not OK    |
| 1.3 | eng1,eng2,eng3          |  OK    |   Not OK    |
| 1.4 | memory:option           |  OK    |   Not OK    |
| 1.5 | memory:option,eng1      |  OK    |   Not OK    |
| 1.6 | eng1,memory:option      | Not OK |   Not OK    |
| 1.7 | memory:option,eng1,eng2 | Crash  |   Not OK    |
| 1.8 | eng1,memory:option,eng2 |  OK    |   Not OK    |
| 1.9 | eng1,eng2,memory:option | Not OK |   Not OK    |
+-----+-------------------------+--------+-------------+
+-------------------------------+--------+-------------+
| --create --engine[2]                                 |
+-----+-------------------------+--------+-------------+
| 2.1 | eng1                    |  OK    |   Not OK    |
| 2.2 | eng1,eng2               |  OK    |   Not OK    |
| 2.3 | eng1,eng2,eng3          |  OK    |   Not OK    |
| 2.4 | memory:option           | Not OK |   Not OK    |
| 2.5 | memory:option,eng1      | Not OK |   Not OK    |
| 2.6 | eng1,memory:option      | Not OK |   Not OK    |
| 2.7 | memory:option,eng1,eng2 | Crash  |   Not OK    |
| 2.8 | eng1,memory:option,eng2 | Not OK |   Not OK    |
| 2.9 | eng1,eng2,memory:option | Not OK |   Not OK    |
+-----+-------------------------+--------+-------------+

After my final patch, mysqlslap now runs like this:

+-------------------------------+--------+-------------+
|                               | single | replication |
+-------------------------------+--------+-------------+
| After third patch                                    | 
+-------------------------------+--------+-------------+
| --engine[1]                                          |
+-----+-------------------------+--------+-------------+
| 1.1 | eng1                    |  OK    |  OK         |
| 1.2 | eng1,eng2               |  OK    |  OK         |
| 1.3 | eng1,eng2,eng3          |  OK    |  OK         |
| 1.4 | memory:option           |  OK    |  OK         |
| 1.5 | memory:option,eng1      |  OK    |  OK         |
| 1.6 | eng1,memory:option      |  OK    |  OK         |
| 1.7 | memory:option,eng1,eng2 |  OK    |  OK         |
| 1.8 | eng1,memory:option,eng2 |  OK    |  OK         |
| 1.9 | eng1,eng2,memory:option |  OK    |  OK         |
+-----+-------------------------+--------+-------------+
+-------------------------------+--------+-------------+
| --create --engine[2]                                 |
+-----+-------------------------+--------+-------------+
| 2.1 | eng1                    |  OK    |  OK         |
| 2.2 | eng1,eng2               |  OK    |  OK         |
| 2.3 | eng1,eng2,eng3          |  OK    |  OK         |
| 2.4 | memory:option           |  OK    |  OK         |
| 2.5 | memory:option,eng1      |  OK    |  OK         |
| 2.6 | eng1,memory:option      |  OK    |  OK         |
| 2.7 | memory:option,eng1,eng2 |  OK    |  OK         |
| 2.8 | eng1,memory:option,eng2 |  OK    |  OK         |
| 2.9 | eng1,eng2,memory:option |  OK    |  OK         |
+-----+-------------------------+--------+-------------+

- address review feedback (cleaner perl code)

(also fixes a Valgrind warning in Buildbot).

 - PBXT fixes.
 - MBug#423035 fix.
 - Compiler warning fixes.

 - Silence a compiler warning.
 - Don't build pbms object files now that we disabled pbms.


storage/pbxt/src/Makefile.am:
  We disabled PBMS, so don't build it.
storage/pbxt/src/datalog_xt.cc:
  Silence a warning about signed/unsigned comparison.

Added (rewritten) patch from Percona to get extended statistics in slow.log:
- Added handling of 'set' variables to set_var.cc. Changed sql_mode to use this
- Added extra logging to slow log of 'Thread_id, Schema, Query Cache hit, Rows sent and Rows examined'
- Added optional logging to slow log, through log_slow_verbosity, of query plan statistics
- Added new user variables log_slow_rate_limit, log_slow_verbosity, log_slow_filter
- Added log-slow-file as synonym for 'slow-log-file', as most slow-log variables starts with 'log-slow'
- Added log-slow-time as synonym for long-query-time
Some trivial MyISAM optimizations:
- In prepare for drop, flush key blocks
- Don't call mi_lock_database if my_disable_locking is used
******
Automatic merge with trunc
******
Updated documentation files to reflect MariaDB and not the Maria storage engine or MySQL
Added (rewritten) patch from Percona to get extended statistics in slow.log:
- Added handling of 'set' variables to set_var.cc. Changed sql_mode to use this
- Added extra logging to slow log of 'Thread_id, Schema, Query Cache hit, Rows sent and Rows examined'
- Added optional logging to slow log, through log_slow_verbosity, of query plan statistics
- Added new user variables log_slow_rate_limit, log_slow_verbosity, log_slow_filter
- Added log-slow-file as synonym for 'slow-log-file', as most slow-log variables starts with 'log-slow'
- Added log-slow-time as synonym for long-query-time
Some trivial MyISAM optimizations:
- In prepare for drop, flush key blocks
- Don't call mi_lock_database if my_disable_locking is used


KNOWN_BUGS.txt:
  Updated file to reflect MariaDB and not the Maria storage engine
  ******
  Updated file to reflect MariaDB and not the Maria storage engine
README:
  Updated file to reflect MariaDB
  ******
  Updated file to reflect MariaDB
mysql-test/r/log_slow.result:
  Test new options for slow query log
  ******
  Test new options for slow query log
mysql-test/r/variables.result:
  Updated result (old version cut of things at 79 characters)
  ******
  Updated result (old version cut of things at 79 characters)
mysql-test/t/log_slow.test:
  Test new options for slow query log
  ******
  Test new options for slow query log
sql/Makefile.am:
  Added log_slow.h
  ******
  Added log_slow.h
sql/event_data_objects.cc:
  Removed not needed test for enable_slow_log (is done when the flag is tested elsewhere)
  ******
  Removed not needed test for enable_slow_log (is done when the flag is tested elsewhere)
sql/events.cc:
  Use the general make_set() function instead of 'symbolic_mode_representation'
  ******
  Use the general make_set() function instead of 'symbolic_mode_representation'
sql/filesort.cc:
  Added status for used query plans
  ******
  Added status for used query plans
sql/log.cc:
  Reset counters if no query_length (from Percona's patch; Not sure if needed, but can do no harm)
  Added extra logging to slow log of 'Thread_id, Schema, Query Cache hit, Rows sent and Rows examined'
  Added optional logging to slow log, through log_slow_verbosity, of query plan statistics
  Fixed wrong test of error condition
  ******
  Reset counters if no query_length (from Percona's patch; Not sure if needed, but can do no harm)
  Added extra logging to slow log of 'Thread_id, Schema, Query Cache hit, Rows sent and Rows examined'
  Added optional logging to slow log, through log_slow_verbosity, of query plan statistics
  Fixed wrong test of error condition
sql/log_slow.h:
  Defines and variables for log_slow_verbosity and log_slow_filter
  ******
  Defines and variables for log_slow_verbosity and log_slow_filter
sql/mysql_priv.h:
  Include log_slow.h
  ******
  Include log_slow.h
sql/mysqld.cc:
  Added new user variables log_slow_rate_limit, log_slow_verbosity, log_slow_filter
  Added log-slow-file as synonym for 'slow-log-file', as most slow-log variables starts with 'log-slow'
  Added log-slow-time as synonym for long-query-time
  Added note that one should use log-slow-filter instead of log-slow-admin-statements
  Updated comment from 'slow_query_log_file'
  
  
  ******
  Added new user variables log_slow_rate_limit, log_slow_verbosity, log_slow_filter
  Added log-slow-file as synonym for 'slow-log-file', as most slow-log variables starts with 'log-slow'
  Added log-slow-time as synonym for long-query-time
  Added note that one should use log-slow-filter instead of log-slow-admin-statements
  Updated comment from 'slow_query_log_file'
sql/set_var.cc:
  Added long_slow_time as synonym for long_query_time
  Added new user variables log_slow_rate_limit, log_slow_verbosity, log_slow_filter
  dded handling of 'set' variables to set_var.cc. Changed sql_mode to use this
  ******
  Added long_slow_time as synonym for long_query_time
  Added new user variables log_slow_rate_limit, log_slow_verbosity, log_slow_filter
  dded handling of 'set' variables to set_var.cc. Changed sql_mode to use this
sql/set_var.h:
  - Added handling of 'set' variables. Changed sql_mode to use this
  ******
  - Added handling of 'set' variables. Changed sql_mode to use this
sql/slave.cc:
  Use global filter also for slaves
  ******
  Use global filter also for slaves
sql/sp_head.cc:
  Simplify saving of general_slow_log state
  Use the general make_set() function instead of 'symbolic_mode_representation'
  
  ******
  Simplify saving of general_slow_log state
  Use the general make_set() function instead of 'symbolic_mode_representation'
sql/sql_cache.cc:
  Added status for used query plans
  ******
  Added status for used query plans
sql/sql_class.cc:
  Remember/restore query_plan_flags over complex statements
  ******
  Remember/restore query_plan_flags over complex statements
sql/sql_class.h:
  Added variables to handle extended slow log statistics
  ******
  Added variables to handle extended slow log statistics
sql/sql_parse.cc:
  Added status for used query plans
  Added test for filtering slow_query_log
  ******
  Added status for used query plans
  Added test for filtering slow_query_log
sql/sql_select.cc:
  Added status for used query plans
  ******
  Added status for used query plans
sql/sql_show.cc:
  Use the general make_set() function instead of 'symbolic_mode_representation'
  ******
  Use the general make_set() function instead of 'symbolic_mode_representation'
sql/strfunc.cc:
  Report first error (not last) if something is wrong in a set
  Removed compiler warning
  ******
  Report first error (not last) if something is wrong in a set
  Removed compiler warning
storage/myisam/mi_extra.c:
  In prepare for drop, flush key blocks (speed optimization)
  ******
  In prepare for drop, flush key blocks (speed optimization)
storage/myisam/mi_locking.c:
  Don't call mi_lock_database if my_disable_locking is used (speed optimization)
  ******
  Don't call mi_lock_database if my_disable_locking is used (speed optimization)

Added (rewritten) patch from Percona to get extended statistics in slow.log:
- Added handling of 'set' variables to set_var.cc. Changed sql_mode to use this
- Added extra logging to slow log of 'Thread_id, Schema, Query Cache hit, Rows sent and Rows examined'
- Added optional logging to slow log, through log_slow_verbosity, of query plan statistics
- Added new user variables log_slow_rate_limit, log_slow_verbosity, log_slow_filter
- Added log-slow-file as synonym for 'slow-log-file', as most slow-log variables starts with 'log-slow'
- Added log-slow-time as synonym for long-query-time
Some trivial MyISAM optimizations:
- In prepare for drop, flush key blocks
- Don't call mi_lock_database if my_disable_locking is used

KNOWN_BUGS.txt:
  Updated file to reflect MariaDB and not the Maria storage engine
README:
  Updated file to reflect MariaDB
mysql-test/r/log_slow.result:
  Test new options for slow query log
mysql-test/r/variables.result:
  Updated result (old version cut of things at 79 characters)
mysql-test/t/log_slow.test:
  Test new options for slow query log
sql/Makefile.am:
  Added log_slow.h
sql/event_data_objects.cc:
  Removed not needed test for enable_slow_log (is done when the flag is tested elsewhere)
sql/events.cc:
  Use the general make_set() function instead of 'symbolic_mode_representation'
sql/filesort.cc:
  Added status for used query plans
sql/log.cc:
  Reset counters if no query_length (from Percona's patch; Not sure if needed, but can do no harm)
  Added extra logging to slow log of 'Thread_id, Schema, Query Cache hit, Rows sent and Rows examined'
  Added optional logging to slow log, through log_slow_verbosity, of query plan statistics
  Fixed wrong test of error condition
sql/log_slow.h:
  Defines and variables for log_slow_verbosity and log_slow_filter
sql/mysql_priv.h:
  Include log_slow.h
sql/mysqld.cc:
  Added new user variables log_slow_rate_limit, log_slow_verbosity, log_slow_filter
  Added log-slow-file as synonym for 'slow-log-file', as most slow-log variables starts with 'log-slow'
  Added log-slow-time as synonym for long-query-time
  Added note that one should use log-slow-filter instead of log-slow-admin-statements
  Updated comment from 'slow_query_log_file'
sql/set_var.cc:
  Added long_slow_time as synonym for long_query_time
  Added new user variables log_slow_rate_limit, log_slow_verbosity, log_slow_filter
  dded handling of 'set' variables to set_var.cc. Changed sql_mode to use this
sql/set_var.h:
  - Added handling of 'set' variables. Changed sql_mode to use this
sql/slave.cc:
  Use global filter also for slaves
sql/sp_head.cc:
  Simplify saving of general_slow_log state
  Use the general make_set() function instead of 'symbolic_mode_representation'
sql/sql_cache.cc:
  Added status for used query plans
sql/sql_class.cc:
  Remember/restore query_plan_flags over complex statements
sql/sql_class.h:
  Added variables to handle extended slow log statistics
sql/sql_parse.cc:
  Added status for used query plans
  Added test for filtering slow_query_log
sql/sql_select.cc:
  Added status for used query plans
sql/sql_show.cc:
  Use the general make_set() function instead of 'symbolic_mode_representation'
sql/strfunc.cc:
  Report first error (not last) if something is wrong in a set
  Removed compiler warning
storage/myisam/mi_extra.c:
  In prepare for drop, flush key blocks (speed optimization)
storage/myisam/mi_locking.c:
  Don't call mi_lock_database if my_disable_locking is used (speed optimization)

Add suppressions for a few warnings that cannot be meaningfully fixed by
MariaDB developers.

Changes for XtraDB, PBXT, and YaSSL also submitted upstream.

Also add a `ccfilter` wrapper that can be used to filter out suppressed warnings in a
local build (to check that new warnings are not introduced).


client/mysqlbinlog.cc:
  Fix compiler warnings.
config/ac-macros/misc.m4:
  Fix wrong naming, autoconfig requires _cv_ in cached names.
extra/yassl/include/yassl_int.hpp:
  Fix compiler warnings.
extra/yassl/src/handshake.cpp:
  Fix compiler warnings.
extra/yassl/src/yassl_imp.cpp:
  Fix compiler warnings.
extra/yassl/src/yassl_int.cpp:
  Fix compiler warnings.
extra/yassl/taocrypt/include/modes.hpp:
  Fix compiler warnings.
extra/yassl/taocrypt/src/asn.cpp:
  Fix compiler warnings.
mysys/my_compress.c:
  Fix compiler warnings.
sql/mysqld.cc:
  Fix compiler warnings.
sql/strfunc.cc:
  Fix compiler warnings.
storage/pbxt/src/discover_xt.cc:
  Fix compiler warnings.
storage/xtradb/fil/fil0fil.c:
  Fix compiler warnings.
storage/xtradb/mtr/mtr0mtr.c:
  Fix compiler warnings.
storage/xtradb/srv/srv0srv.c:
  Fix compiler warnings.
storage/xtradb/srv/srv0start.c:
  Fix compiler warnings.
strings/decimal.c:
  Fix compiler warnings.
support-files/ccfilter:
  Add helper for suppressing compiler warnings in local developer source tree.
      
  Allows to check for not introducing new warnings into Buildbot without having to actually
  run the build through Buildbot.
support-files/compiler_warnings.supp:
  Suppress a few warnings that cannot be meaningfully fixed in source code.

Fix parsing of invalid plugin enum option value.

Previous patch to fix plugin enum option parsing on big-endian introduced another bug due
to incorrect comparison of unsigned value. This would cause an incorrect value to be
parsed as value 0.

See also MySQL Bug#41010 and Bug#32034.


mysql-test/mysql-test-run.pl:
  Add a facility for test case to run the mysqld binary (to test that invalid startup options
  are rejected correctly).
mysql-test/r/mysqld_option_err.result:
  Add a test case to check that invalid startup options for mysqld are rejected.
  This is needed to test MBug#423035.
  Also add a few other similar tests, as this was completely untested before this patch.
mysql-test/t/mysqld_option_err.test:
  Add a test case to check that invalid startup options for mysqld are rejected.
  This is needed to test MBug#423035.
  Also add a few other similar tests, as this was completely untested before this patch.
mysys/my_getopt.c:
  Fix parsing of invalid plugin enum option value.

Fixed a bug that caused MySQL to crash on shutdown, if startup fails due to an incorrect command line parameter

Pre-push merge to main. This should give the complete WL entry diff.

- Address review feedback R4: better comments, formatting

- Add strmov_overlapp.c where it's needed
- Add libevent where it is required
- Fix typo in unittest/mysys/waiting_threads-t.c
- fix xtradb C language source so that they have variable declarations before
  any operators, as it is (or was?) required in C.

libmysql/CMakeLists.txt:
  - Add strmov_overlapp.c where it's needed
sql/CMakeLists.txt:
  - Add strmov_overlapp.c where it's needed
  - Add libevent where it is required
storage/xtradb/btr/btr0cur.c:
  - fix xtradb C language source so that they have variable declarations before
    any operators, as it is (or was?) required in C.
storage/xtradb/buf/buf0buddy.c:
  - fix xtradb C language source so that they have variable declarations before
    any operators, as it is (or was?) required in C.
storage/xtradb/buf/buf0flu.c:
  - fix xtradb C language source so that they have variable declarations before
    any operators, as it is (or was?) required in C.
storage/xtradb/fil/fil0fil.c:
  - fix xtradb C language source so that they have variable declarations before
    any operators, as it is (or was?) required in C.
storage/xtradb/handler/i_s.cc:
  - fix xtradb C language source so that they have variable declarations before
    any operators, as it is (or was?) required in C.
storage/xtradb/srv/srv0srv.c:
  - fix xtradb C language source so that they have variable declarations before
    any operators, as it is (or was?) required in C.
strings/CMakeLists.txt:
  - Add strmov_overlapp.c where it's needed
unittest/mysys/waiting_threads-t.c:
  - Fix typo in unittest/mysys/waiting_threads-t.c

- Addressing review feedback, generation 4.

include/my_global.h:
  Make ALIGN_PTR's action correspond to that of ALIGN_SIZE
sql/item.cc:
  MWL#17: Table-elimination
  - Review feedback: function renames, better comments
sql/item.h:
  MWL#17: Table-elimination
  - Review feedback: function renames, better comments
sql/item_cmpfunc.cc:
  MWL#17: Table-elimination
  - Review feedback: function renames, better comments
sql/item_subselect.cc:
  MWL#17: Table-elimination
  - Review feedback: function renames, better comments
sql/item_subselect.h:
  MWL#17: Table-elimination
  - Review feedback: function renames, better comments
sql/opt_table_elimination.cc:
  MWL#17: Table-elimination
  - Addressing review feedback, generation 4: abstract everything in case
    we would need to change it for something else in the future.
sql/sql_list.h:
  MWL#17: Table-elimination
  - Introduce exchange_sort(List<T> ...) template function
sql/sql_select.cc:
  MWL#17: Table-elimination
  - Review feedback: function renames, better comments

Includes disabling PBMS (per Paul's recommendation) and test file fixes.
Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>

 - Disable PBMS in MariaDB (as per recommendation of Paul).
 - Add missing *-master.opt files to make testsuite work on case-sensitive file systems.
 - Result file updates.

Solaris build scripts under BUILD/ were changed, but Makefile.am was not updated to reflect
the new set of file names.

- Fix a trivial problem when OR-merging two multi-equalities
- Amend testsuite to provide full gcov coverage

mysql-test/r/table_elim.result:
  MWL#17: Table elimination:
  - Amend testsuite to provide full gcov coverage
mysql-test/t/table_elim.test:
  MWL#17: Table elimination:
  - Amend testsuite to provide full gcov coverage

- add process-gcov-annotations.pl script that processes .gcov files 
  according to purecov annotations in source code
- add --gcov-src-dir=subdir option to mysql-test-run so that one can
  do gcov processing only for source files in a certain directory.

- Mark gcov deadcode

- More test coverage
- Remove unused code

- Add more testcases.
- Fix trivial compile failure
- Remove handling of "column IN (one_element)". This is converted to equality 
  elsewhere

mysql-test/r/table_elim.result:
  MWL#17: Table elimination
  - Add more testcases.
  - Fix trivial compile failure
mysql-test/t/table_elim.test:
  MWL#17: Table elimination
  - Add more testcases
sql/mysqld.cc:
  MWL#17: Table elimination
  - Fix trivial compile failure
sql/opt_table_elimination.cc:
  MWL#17: Table elimination
  - Add more testcases.
  - Remove handling of "column IN (one_element)".This is converted to equality 
    elsewhere

- Add an @@optimizer_switch flag for table_elimination for debug build
- Better comments 

mysql-test/t/index_merge_myisam.test:
  MWL#17: Table elimination: last fixes
  - Add an @@optimizer_switch flag for table_elimination for debug build
sql/mysql_priv.h:
  MWL#17: Table elimination: last fixes
  - Add an @@optimizer_switch flag for table_elimination for debug build
sql/mysqld.cc:
  MWL#17: Table elimination: last fixes
  - Add an @@optimizer_switch flag for table_elimination for debug build

- Correctly handle the case where we have multi-table DELETE and a table
  that we're deleting from looks like it could be eliminated.

- Remove a piece of code that's not needed anymore.

- More testcases
- Set correct dependencies for non-bound multi-equalities.

mysql-test/r/table_elim.result:
  MWL#17: Table elimination
  - More testcases
mysql-test/t/table_elim.test:
  MWL#17: Table elimination
  - More testcases
sql/opt_table_elimination.cc:
  MWL#17: Table elimination
  - Set correct dependencies for non-bound multi-equalities.

- Multiple-equality handling

- Use Table_elimination only for functional dependency checking for
  individual objects and rename it to Func_dep_analyzer