WL#1034
- This changeset also changes the executor so its quite more stable now.
  Stressing test case added that executes ~800 events per second and dropping
  hundreds of events at once using DROP DATABASE.
(with fixes after review of JimW)
(with fixes after review of Serg)


mysql-test/r/events.result:
  update results after TRIGGER_ACL was added
mysql-test/t/events.test:
  -redundant line
sql/event.cc:
  Implemented evex_db_drop_events() which drops all events
  from a specific database. Needed for SQLCOM_DROP_DATABASE
sql/event.h:
  - protect the event better (see the changes to event_executor.cc
    and event.cc). An event object could be used in a spawned thread
    before it's executed but till now the object is marked as being
    executed when the anonymous sp_head is executed. However, there are
    timeframes before and after that during which the event is not marked
    as executed and other thread may delete the object -> so we end with
    a nirvana pointer.
sql/event_executor.cc:
  - extract some of the code executed in the main thread to a function. Too long
    functions are bad for the overview.
  - prepend all information/error messages to the console with "SCHEDULER:" for
    better overview, and easied searching in the log tables.
sql/event_priv.h:
  - change the name, of evex_db_find_event_by_name() and don't
    used C++ features like function overloading
  - define consts for result returned from event_timed::spawn_now()
sql/event_timed.cc:
  - add few methods related to event execution.
    now the event spawns the worker thread and
    passes itself as parameter. This way it locks itself for exectution
    first and then spawning -> no race condition. When the worker thread
    has finished working with the reference it calls back
    event_timed::spawn_thread_finish() to unlock itself.
sql/sql_db.cc:
  - call evex_drop_db_events() on DROP DATABASE

into  mysql.com:/home/stewart/Documents/MySQL/5.1/new

into  mysql.com:/home/emurphy/src/mysql/bk-clean/mysql-5.1-new-merge

into  mysql.com:/usr/home/bar/mysql-5.1.new.ctype

A prerequisite for several fulltext and XML bugs.
MY_CHARSET_HANDLER now has a new function "ctype"
to detect a type of the next character in a string
(i.e. digit, letter, space, punctuation, control, etc),
which now works correctly for both 8bit and multibyte charsets.
Previously only 8bit charsets worked correctly,
while any multibyte character was considered as letter
in multibyte charsets.
Many files:
  Adding new function
Makefile.am:
  Adding build rules for uctypedump,
  a dump tool to create my_uctype.h
  using Unicode Character Database file.
m_ctype.h:
  Adding declaration of my_uni_ctype,
  ctype data for Unicode.
  Adding new member into MY_CHARSET_HANDLER
Makefile.am:
  Adding my_uctype.h into noinst_HEADERS
my_uctype.h, uctypedump.c:
  new files:
  ctype data for unicode,
  and the tool to generate it from 
  a Unicode Character Database file.



include/Makefile.am:
  Adding my_uctype.h
include/m_ctype.h:
  Adding declaration of my_uni_ctype,
  ctype data for Unicode.
strings/Makefile.am:
  Adding build rules for uctypedump,
  a dump tool to create my_uctype.h
  using Unicode Character Database file.
strings/ctype-big5.c:
  Adding new function
strings/ctype-bin.c:
  Adding new function
strings/ctype-cp932.c:
  Adding new function
strings/ctype-euc_kr.c:
  Adding new function
strings/ctype-eucjpms.c:
  Adding new function
strings/ctype-gb2312.c:
  Adding new function
strings/ctype-gbk.c:
  Adding new function
strings/ctype-latin1.c:
  Adding new function
strings/ctype-mb.c:
  Adding new function
strings/ctype-simple.c:
  Adding new function
strings/ctype-sjis.c:
  Adding new function
strings/ctype-tis620.c:
  Adding new function
strings/ctype-ucs2.c:
  Adding new function
strings/ctype-ujis.c:
  Adding new function
strings/ctype-utf8.c:
  Adding new function

mysql-test/t/disabled.def:
  disabling new test that was added during null-merge from 5.0
  the new test innodb_unsafe_binlog will be re-enabled when the
  5.1 snapshot for InnoDB is applied. Disabling test rather than
  removing files to make future merges easier (removing the files
  would cause merge conflicts when the files are re-added in the
  5.1 snapshot).

sql/ha_ndbcluster.cc:
  ndbcluster_fill_files_table should return int

into  mysql.com:/home/emurphy/src/mysql/bk-clean/mysql-5.1-new-merge


sql/ha_innodb.cc:
  Auto merged

storage/example/ha_example.cc:
  add handlerton call for fill files table

into  mysql.com:/home/emurphy/src/mysql/bk-clean/mysql-5.1-new-merge
Null-merge InnoDB snapshots from 5.0 to 5.1


storage/innobase/include/lock0lock.h:
  Auto merged
mysql-test/r/innodb.result:
  null-merge from 5.0
mysql-test/t/innodb.test:
  null-merge from 5.0
sql/ha_innodb.cc:
  null-merge from 5.0
storage/innobase/include/data0type.h:
  null-merge from 5.0
storage/innobase/include/data0type.ic:
  null-merge from 5.0
storage/innobase/include/os0file.h:
  null-merge from 5.0
storage/innobase/include/row0mysql.h:
  null-merge from 5.0
storage/innobase/lock/lock0lock.c:
  null-merge from 5.0
storage/innobase/os/os0file.c:
  null-merge from 5.0
storage/innobase/row/row0ins.c:
  null-merge from 5.0
storage/innobase/row/row0mysql.c:
  null-merge from 5.0
storage/innobase/row/row0sel.c:
  null-merge from 5.0
storage/innobase/trx/trx0trx.c:
  null-merge from 5.0

into  mysql.com:/home/dlenev/src/mysql-5.1-merges

into  mysql.com:/usr/local/home/marty/MySQL/mysql-5.1-new-wl1892


storage/ndb/src/ndbapi/NdbEventOperationImpl.cpp:
  Auto merged

into  mysql.com:/home/dlenev/src/mysql-5.1-merges

into  mysql.com:/home/dlenev/src/mysql-5.1-merges


sql/ha_berkeley.cc:
  Auto merged

into  mysql.com:/home/kostja/mysql/mysql-5.1-merge

When we add new privilege we should update mysql-test/lib/init_db.sql
accordingly.


mysql-test/lib/init_db.sql:
  Added TRIGGER privilege.
sql/sql_acl.h:
  Updated comment describing process of addition of new privileges - added yet
  another script place which should be modified when new privilege is added.

into  mysql.com:/space/pekka/ndb/version/my51

storage/ndb/src/ndbapi/NdbBlob.cpp:
  fix some mem leaks (event ops however are never dtor-ed yet)
storage/ndb/src/ndbapi/NdbEventOperationImpl.cpp:
  fix some mem leaks (event ops however are never dtor-ed yet)
storage/ndb/test/ndbapi/test_event_merge.cpp:
  fix some mem leaks (event ops however are never dtor-ed yet)

into  mysql.com:/home/kostja/mysql/mysql-5.1-merge


mysql-test/r/sp.result:
  Auto merged
mysql-test/t/sp.test:
  Auto merged

into  mysql.com:/home/kostja/mysql/mysql-5.1-merge

into  mysql.com:/usr/local/home/marty/MySQL/mysql-5.1-new-wl1892


sql/ha_ndbcluster_binlog.cc:
  Auto merged
storage/ndb/include/ndbapi/NdbDictionary.hpp:
  Auto merged
storage/ndb/src/ndbapi/NdbDictionary.cpp:
  Auto merged

into  mysql.com:/home/stewart/Documents/MySQL/5.1/tmp_merge

into  mysql.com:/home/stewart/Documents/MySQL/5.1/tmp_merge


mysql-test/r/information_schema.result:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/handler.h:
  Auto merged
sql/sql_show.cc:
  Auto merged

fix up test cases.


mysql-test/r/information_schema.result:
  update result for INFORMATION_SCHEMA.FILES
mysql-test/r/information_schema_db.result:
  update result for INFORMATION_SCHEMA.FILES
sql/ha_ndbcluster.cc:
  in fill_files_table, use my_snprintf instead of snprintf
sql/sql_show.cc:
  correct DBUG_ENTER for fill_schema_files
sql/table.h:
  add SCH_FILES to information schema enum

into  mysql.com:/data0/mysqldev/my/mysql-5.1-new


configure.in:
  Null merge.

into  mysql.com:/home/kostja/mysql/mysql-5.1-merge


sql/ha_berkeley.cc:
  Use local: manual merge

into  poseidon.ndb.mysql.com:/home/tomas/mysql51


sql/ha_ndbcluster.cc:
  Auto merged
sql/ha_ndbcluster.h:
  Auto merged
sql/sql_show.cc:
  Auto merged

corrected test case

correction

into  mysql.com:/usr/local/home/marty/MySQL/mysql-5.1-new-wl1892


sql/ha_ndbcluster_binlog.cc:
  Auto merged
storage/ndb/src/kernel/blocks/suma/Suma.cpp:
  Auto merged

into  mysql.com:/mnt/hda4/home/alik/MySQL/devel/5.1-bug9412-latest