When a table status is requested by statement like SHOW TABLE
STATUS and there is another statement (e.g. DELETE) sets
number of records to 0 concurrently, we may get division by
zero error, which crashes a server.

This is fixed by using thread local variable x->records instead
of shared info->state->records when we check if it is zero and
divide by it.

into  mysql.com:/home/kent/bk/tmp4/mysql-5.0-engines

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

into  xiphis.org:/home/antony/work2/mysql-5.0-engines.merge

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

into  mysql.com:/windows/Linux_space/MySQL/mysql-5.0-ndb

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

- test case workaround to avoid random failures

into  mysql.com:/windows/Linux_space/MySQL/mysql-5.0-ndb

into  mysql.com:/windows/Linux_space/MySQL/mysql-5.0-ndb

into  dev3-240.dev.cn.tlan:/home/justin.he/mysql/mysql-5.0/mysql-5.0-ndb-bj.merge

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

In certain cases AFTER UPDATE/DELETE triggers on NDB tables that referenced
subject table didn't see the results of operation which caused invocation
of those triggers. In other words AFTER trigger invoked as result of update
(or deletion) of particular row saw version of this row before update (or
deletion).

The problem occured because NDB handler in those cases postponed actual
update/delete operations to be able to perform them later as one batch.

This fix solves the problem by disabling this optimization for particular
operation if subject table has AFTER trigger for this operation defined.
To achieve this we introduce two new flags for handler::extra() method:
HA_EXTRA_DELETE_CANNOT_BATCH and HA_EXTRA_UPDATE_CANNOT_BATCH.
These are called if there exists AFTER DELETE/UPDATE triggers during a
statement that potentially can generate calls to delete_row()/update_row().
This includes multi_delete/multi_update statements as well as insert statements
that do delete/update as part of an ON DUPLICATE statement.

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/mrg04/50

into  mysql.com:/windows/Linux_space/MySQL/mysql-5.0-ndb

into  mysql.com:/home/svoj/devel/mysql/BUG25729/mysql-5.0-engines

into  recycle.(none):/src/bug23491_ii/my50-bug23491_ii

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

into  bodhi.local:/opt/local/work/mysql-5.0-runtime

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-ndb

  
The query-cache watch thread was continually allocating new thread entries on the
THD MEM_ROOT, not freed until server exit.
  
Fixed by using a simple array, auto-expanded as necessary.

            LEFT JOIN
Fixed that in certain situations MATCH ... AGAINST returns false hits
for NULLs produced by LEFT JOIN when there is no fulltext index
available.

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-4.1-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

Remove the setting of --local-load parameter for mysqlbinlog and leave that to the testcases
to decide what params to use.

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.0-ndb

  make sure not to leave partially initialized pagerage-records