Problem: Many test cases don't clean up after themselves (fail
to drop tables or fail to reset variables). This implies that:
(1) check-testcase in the new mtr that currently lives in
5.1-rpl failed. (2) it may cause unexpected results in
subsequent tests.
Fix: make all tests clean up.
Also: cleaned away unnecessary output in rpl_packet.result
Also: fixed bug where rpl_log called RESET MASTER with a running
slave. This is not supposed to work.
Also: removed unnecessary code from rpl_stm_EE_err2 and made it
verify that an error occurred.
Also: removed unnecessary code from rpl_ndb_ctype_ucs2_def.


mysql-test/extra/rpl_tests/rpl_loaddata.test:
  Made test clean up after itself.
mysql-test/extra/rpl_tests/rpl_stm_EE_err2.test:
  Made test clean up after itself.
  Also removed unnecessary save_master_pos.
  Also made test verify that an error occurred.
mysql-test/extra/rpl_tests/rpl_truncate_helper.test:
  Made test clean up after itself.
mysql-test/include/query_cache.inc:
  Made test clean up after itself.
mysql-test/suite/binlog/t/binlog_auto_increment_bug33029.test:
  Made test clean up after itself.
mysql-test/suite/rpl/t/rpl_alter_db.test:
  Made test clean up after itself.
  Easiest to refactor the test a little, to use an auxiliary database instead of mysql:
  Then we don't need to read the collation at the start of the test and reset it at the
  end of the test. We can just drop the database.
mysql-test/suite/rpl/t/rpl_drop_db.test:
  Made test clean up after itself.
mysql-test/suite/rpl/t/rpl_drop_view.test:
  Made test clean up after itself.
mysql-test/suite/rpl/t/rpl_events.test:
  Made test clean up after itself.
mysql-test/suite/rpl/t/rpl_idempotency.test:
  Made test clean up after itself.
mysql-test/suite/rpl/t/rpl_ignore_table.test:
  Made test clean up after itself.
  The existing cleanup code didn't work, because the --replicate-*
  options prevented the "drop table" from being replicated. Moved
  "drop table t4" to a statement of its own.
mysql-test/suite/rpl/t/rpl_packet.test:
  Made test clean up after itself.
  Also replaced SHOW SLAVE STATUS by query_get_value(SHOW SLAVE STATUS...),
  since only one column of the result was interesting.
mysql-test/suite/rpl/t/rpl_row_max_relay_size.test:
  Made test clean up after itself.
  Instead of setting binlog format at the beginning of the test, we just
  do 'source include/have_binlog_format_row.inc' like all other tests.
mysql-test/suite/rpl_ndb/t/rpl_ndb_2other.test:
  Made test clean up after itself.
mysql-test/suite/rpl_ndb/t/rpl_ndb_ctype_ucs2_def.test:
  Made test clean up after itself.
  Also removed unnecessary 'create table; drop table'
  Also removed unnecessary use of --command
mysql-test/suite/rpl_ndb/t/rpl_ndb_multi.test:
  Made test clean up after itself.
mysql-test/t/innodb-autoinc-optimize.test:
  Made test clean up after itself.
mysql-test/t/innodb.test:
  Made test clean up after itself.
mysql-test/t/log_tables.test:
  Made test clean up after itself.
mysql-test/t/mysql_client_test.test:
  Made test clean up after itself.
mysql-test/t/partition.test:
  Made test clean up after itself.
mysql-test/t/status.test:
  Made test clean up after itself.

mysql_upgrade results changed due to the error messesge of mysqlcheck has changed.

            
Innodb monitor could cause a server crash because of invalid access to a
shared variable in a concurrent environment.
                  
This patch adds a guard to protect against crashes but not against
inconsistent values because of performance reasons.

sql/sql_class.cc:
  * Attempt snapshot of static memory pointer proc_info to avoid null pointers.

where it was forgotten to remove them.

refining the regression test to avoid explicit innodb engine in create.

Prevent this by modifying CFLAGS and CXXFLAGS.

Upmerge from 5.0, modified according to the different spec file structure.

support-files/mysql.spec.sh:
  Bug #40546  Debug server in RPM is built with compiler optimization
  
  Modify CFLAGS and CXXFLAGS for the duration of the debug server build
  (implemented by doing it in a subshell)
  so that they do not contain any optimization flag.
  Play it safe and prepare for both gcc and icc.

Prevent this by modifying CFLAGS and CXXFLAGS.

support-files/mysql.spec.sh:
  Bug #40546  Debug server in RPM is built with compiler optimization
  
  Modify CFLAGS and CXXFLAGS for the duration of the debug server build
  (implemented by doing it in a subshell)
  so that they do not contain any optimization flag.
  Play it safe and prepare for both gcc and icc.

Problem 1: BUG#36625: rpl_redirect doesn't do anything useful. It tests an
obsolete feature that was never fully implemented.
Fix 1: Remove rpl_redirect.
Problem 2: rpl_innodb_bug28430 and rpl_flushlog_loop are disabled despite the
bugs for which they were disabled have been fixed.
Fix 2: Re-enable rpl_innodb_bug28430 and rpl_flushlog_loop.


mysql-test/suite/rpl/r/rpl_redirect.result:
  Removed result file for obsolete test.\
mysql-test/suite/rpl/t/disabled.def:
  Re-enabled tests.
mysql-test/suite/rpl/t/rpl_redirect.test:
  Removed obsolete test.

The convert_constant_item function converts a constant to integer using
field for condition like 'field = a_constant'. In some cases the
convert_constant_item is called for a subquery when outer select is already
being executed, so convert_constant_item saves field's value to prevent its
corruption. For EXPLAIN and at the prepare phase field's value isn't
initialized yet, thus when convert_constant_item tries to restore saved
value it fails assertion.

Now the convert_constant_item doesn't save/restore field's value if it's
haven't been read yet. Outer constant values are always saved.

mysql-test/r/explain.result:
  Added a test case for the bug#37870.
mysql-test/t/explain.test:
  Added a test case for the bug#37870.
sql/item_cmpfunc.cc:
  Bug#37870: Usage of uninitialized value caused failed assertion.
  Now the convert_constant_item doesn't save/restore field's value if it's
  haven't been read yet. Outer constant values are always saved.

order by

Problem was that the first index read was unordered,
and the next was ordered, resulting in use of
uninitialized data.

Solution was to use the correct variable to see if
the 'next' call should be ordered or not.

mysql-test/r/partition.result:
  Bug#40494: MYSQL server crashes on range access with
  partitioning and order by
  
  Added test case for the bug.
mysql-test/t/partition.test:
  Bug#40494: MYSQL server crashes on range access with
  partitioning and order by
  
  Added test case for the bug.
sql/ha_partition.cc:
  Bug#40494: MYSQL server crashes on range access with
  partitioning and order by
  
  Used the wrong variable to decide to continue with
  ordered or unordered scan.

Removed unnecessary server options --rpl-recovery-rank. This is obsolete
and does not affect the test suite in any useful way.


mysql-test/suite/rpl/r/rpl_mixed_ddl_dml.result:
  updated result file
mysql-test/suite/rpl/rpl_1slave_base.cnf:
  removed unnecessary option

  Bug#39848 events_bugs fails sporadically on pushbuild
            (missing rows in table event_log)
     Details: Reimplement the subtest for BUG 28924
              - check if the number of rows within the table
                event_log changes but don't print rows
                because the number varies depending on
                load on testing box
              - shift DROP USER befor DROP EVENT
                = Subtest fits again to old bug
              - remove no more needed comments + variables
  Bug#39863 events_bugs fails sporadically on pushbuild 
            (extra processes in I_S.PROCESSLIST)
     Details: Abort with appropriate message to the protocol if
              release_lock() does not has the intended effect.
              This cannot prevent problems caused by the probably
              buggy release_lock() but it reveals if we had a
              problem in this area.
  Bug#39978 main.events_bugs does not clean up
     Detail: Restore global.event_scheduler = ON at end of test
  Bug#39569 events_bugs fails sporadically on pushbuild
            (should have failed with errno 1539)
     Detail: Set $wait_timeout to 4 instead of 2
- Fix two instabilities (result sets pulled from processlist in
  subtest for bug 16407) which were found during tests with high
  parallel I/O load
- Minor improvements of formatting
  Details:
  - Add comments
  - Remove tabs and trailing blanks
  - Add line breaks for better readability

updating two test results.

mysql-test/suite/rpl/r/rpl_row_basic_2myisam.result:
  results changed.
mysql-test/suite/rpl_ndb/r/rpl_row_basic_7ndb.result:
  results changed.