fixed IN subselect with basic constant left expression
SQLCOM_CREATE_TABLE, SQLCOM_UPDATE_MULTI, SQLCOM_REPLACE_SELECT, SQLCOM_INSERT_SELECT, QLCOM_DELETE_MULTI fixed to be compatible with PS (BUG#3398, BUG#3406)
fixed multiupdate privelege check (BUG#3408)
fixed multiupdate tables check (BUG#3411)
unchecked commands now is rejected by PS protocol to avoid serever crash
fixed cleunup procedure to be compatible sith DO/SET (BUG#3393)


include/mysqld_error.h:
  new error for unsupported command in PS
mysql-test/r/multi_update.result:
  test sutes (BUG#3408, BUG#3411)
mysql-test/t/multi_update.test:
  test sutes (BUG#3408, BUG#3411)
sql/item_cmpfunc.cc:
  fixed IN subselect with basic constant left expression
sql/mysql_priv.h:
  some function frop sql_parse.h become public
sql/set_var.cc:
  check for SET command via PS
sql/set_var.h:
  check for SET command via PS
sql/share/czech/errmsg.txt:
  new error for unsupported command in PS
sql/share/danish/errmsg.txt:
  new error for unsupported command in PS
sql/share/dutch/errmsg.txt:
  new error for unsupported command in PS
sql/share/english/errmsg.txt:
  new error for unsupported command in PS
sql/share/estonian/errmsg.txt:
  new error for unsupported command in PS
sql/share/french/errmsg.txt:
  new error for unsupported command in PS
sql/share/german/errmsg.txt:
  new error for unsupported command in PS
sql/share/greek/errmsg.txt:
  new error for unsupported command in PS
sql/share/hungarian/errmsg.txt:
  new error for unsupported command in PS
sql/share/italian/errmsg.txt:
  new error for unsupported command in PS
sql/share/japanese/errmsg.txt:
  new error for unsupported command in PS
sql/share/korean/errmsg.txt:
  new error for unsupported command in PS
sql/share/norwegian-ny/errmsg.txt:
  new error for unsupported command in PS
sql/share/norwegian/errmsg.txt:
  new error for unsupported command in PS
sql/share/polish/errmsg.txt:
  new error for unsupported command in PS
sql/share/portuguese/errmsg.txt:
  new error for unsupported command in PS
sql/share/romanian/errmsg.txt:
  new error for unsupported command in PS
sql/share/russian/errmsg.txt:
  new error for unsupported command in PS
sql/share/serbian/errmsg.txt:
  new error for unsupported command in PS
sql/share/slovak/errmsg.txt:
  new error for unsupported command in PS
sql/share/spanish/errmsg.txt:
  new error for unsupported command in PS
sql/share/swedish/errmsg.txt:
  new error for unsupported command in PS
sql/share/ukrainian/errmsg.txt:
  new error for unsupported command in PS
sql/sql_lex.cc:
  first table unlincking procedures for CREATE command
sql/sql_lex.h:
  first table unlincking procedures for CREATE command
sql/sql_parse.cc:
  used function to exclude first table from list
  SQLCOM_CREATE_TABLE, SQLCOM_UPDATE_MULTI, SQLCOM_REPLACE_SELECT, SQLCOM_INSERT_SELECT, QLCOM_DELETE_MULTI fixed to be compatible with PS (BUG#3398, BUG#3406)
  fixed multiupdate privelege check (BUG#3408)
  fixed multiupdate tables check (BUG#3411)
sql/sql_prepare.cc:
  fixed a lot of commands to be compatible with PS
  unchecked commands now is rejected to avoid serever crash
sql/sql_select.cc:
  allow empty result for PS preparing
sql/sql_union.cc:
  fixed cleunup procedure to be compatible sith DO/SET (BUG#3393)
sql/sql_update.cc:
  fixed update to use correct tables lists (BUG#3408)
sql/table.h:
  flag to support multi update tables check (BUG#3408)
tests/client_test.c:
  removed unsupported tables
  fixed show table test
  added new tests

sql/sql_parse.cc:
  reverting table list to be able to use it in next PS call
sql/sql_rename.cc:
  reverting table list to be able to use it in next PS call
tests/client_test.c:
  typo fixed
  test of crete/drop/rename commands

into sanja.is.com.ua:/home/bell/mysql/bk/work-ps2-4.1


sql/table.h:
  Auto merged

into ice.snake.net:/Volumes/ice2/MySQL/bk/mysql-4.1

fixed error code in union test


mysql-test/t/union.test:
  right code worr 4.1 error
sql/log_event.cc:
  assign non-cachable for Item status for all stack tables for safety
sql/repl_failsafe.cc:
  assign non-cachable for Item status for all stack tables for safety
sql/slave.cc:
  assign non-cachable for Item status for all stack tables for safety
sql/sql_acl.cc:
  assign non-cachable for Item status for all stack tables for safety
sql/sql_base.cc:
  assign non-cachable for Item status for all stack tables for safety
  non-cachable status processing
sql/sql_cache.cc:
  assign non-cachable for Item status for all stack tables for safety
sql/sql_class.cc:
  removed ald way to prevent using stack tables for caching Items in PS
sql/sql_class.h:
  removed old way to prevent using stack tables for caching Items in PS
sql/sql_help.cc:
  assign non-cachable for Item status for all stack tables for safety
sql/sql_insert.cc:
  assign non-cachable for Item status for all stack tables for safety
  removed old way to prevent using stack tables for caching Items in PS
sql/table.h:
  non-cachable for Item status for tables

sql/share/portuguese/errmsg.txt:
  Translation from English
sql/share/spanish/errmsg.txt:
  Translation from English

I can't see group_concat_max_len in a list of variables


sql/set_var.cc:
  add sys_group_concat_max_len.name

fixed outer joins
test of different joins included


sql/item.cc:
  for Item_param we have to have value set instead of fave item fixed
sql/sql_base.cc:
  fixed PS with outer joins
tests/client_test.c:
  test of different types of joins

into sanja.is.com.ua:/home/bell/mysql/bk/work-on-4.1


sql/mysql_priv.h:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/table.h:
  Auto merged

fixed aggregate functions in PS (BUG#3360)


mysql-test/r/union.result:
  4.1 more correct error
sql/item_cmpfunc.h:
  and_conds do not make fix fields
sql/item_sum.cc:
  storing/restoring argument of aggregate function for prepared statements
  restoring order list of group_concat for safety
sql/item_sum.h:
  storing/restoring argument of aggregate function for prepared statements
  layout fix
sql/mysql_priv.h:
  just declaration
sql/sql_base.cc:
  fix_fields() have to be called with temporary memory pool active
sql/sql_parse.cc:
  removed hack with item pointer storing
sql/sql_prepare.cc:
  debug output added
  removed hack with item pointer storing
sql/sql_select.cc:
  fix_fields now should be called separately
sql/sql_union.cc:
  removed wrong merged check from 4.0 (4.1 have its own protection)
sql/table.h:
  removed hack with item pointer storing
tests/client_test.c:
  new test fo PS

into serg.mylan:/usr/home/serg/Abk/mysql-4.1


sql/ha_myisam.cc:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/table.h:
  Auto merged

into eagle.mysql.r18.ru:/home/vva/work/BUG_2385/mysql-4.1

into eagle.mysql.r18.ru:/home/vva/work/BUG_2385/mysql-4.1


sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged

Bug #2385 "CREATE TABLE LIKE lacks locking on source and destination table" 
(in sql_table.cc and mysql-test/t/synchronization.test)


mysql-test/t/synchronization.test:
  added sleep to more reliable work
sql/sql_table.cc:
  made some optimization of last patch for 
  Bug #2385 "CREATE TABLE LIKE lacks locking on source and destination table" 
  in mysql_create_like_table

into eagle.mysql.r18.ru:/home/vva/work/BUG_2397/mysql-4.1

into eagle.mysql.r18.ru:/home/vva/work/BUG_system_db_test/mysql-4.1

BitKeeper/deleted/.del-manual_toc.html~f483f2d33d9acb41:
  Delete: Docs/manual_toc.html
BitKeeper/deleted/.del-manual.ja.texi~bdf63728a7b03acf:
  Delete: Docs/manual.ja.texi
BitKeeper/deleted/.del-section.Infolinks.texi~c237f2f9:
  Delete: Docs/section.Infolinks.texi
BitKeeper/deleted/.del-section.Testimonials.texi~418f3f63:
  Delete: Docs/section.Testimonials.texi
BitKeeper/deleted/.del-section.Users.texi~41da5f4c:
  Delete: Docs/section.Users.texi

for working on aix and so on..


mysql-test/t/system_mysql_db_fix-master.opt:
  added newline for working aix and so on..

into hegel.local:/home/miguel/bk/mysql-4.1


sql/mysqld.cc:
  Auto merged

sql/share/swedish/errmsg.txt:
  Added missing error message swedish/errmsg.txt and corrected another one.

Final version of patch.

Adds support for specifying of DEFAULT NOW() and/or ON UPDATE NOW()
clauses for TIMESTAMP field definition.
Current implementation allows only one such field per table and
uses several unireg types for storing info about this properties of
field. It should be replaced with better implementation when new
.frm format is introduced.


include/mysqld_error.h:
  Added error codes for case when we have more than one column with NOW()
  in DEFAULT or ON UPDATE clauses and for case when we are using ON UPDATE
  clause with wrong type.
mysql-test/r/create.result:
  Added tests for using of DEFAULT NOW() and ON UPDATE NOW() with
  non-TIMESTAMP fields.
mysql-test/r/show_check.result:
  Updated test results to reflect new default look of TIMESTAMP fields
  in SHOW CREATE TABLE.
mysql-test/r/system_mysql_db.result:
  Updated test results to reflect new default look of TIMESTAMP fields
  in SHOW CREATE TABLE.
mysql-test/r/type_ranges.result:
  Updated test results to reflect new default look of TIMESTAMP fields
  in SHOW COLUMNS.
mysql-test/r/type_timestamp.result:
  Added tests for various DEFAULT and ON UPDATE clauses for TIMESTAMP
  fields definitions.
mysql-test/t/create.test:
  Added tests for using of DEFAULT NOW() and ON UPDATE NOW() with
  non-TIMESTAMP fields.
mysql-test/t/type_timestamp.test:
  Added tests for various DEFAULT and ON UPDATE clauses for TIMESTAMP
  fields definitions.
sql/field.cc:
  Added support for various combinations of DEFAULT and ON UPDATE clauses
  for TIMESTAMP field. 
  
  Setting TABLE::timestamp* members for TIMESTAMP fields with auto-set 
  option taking into account their unireg type (which corresponds to 
  various DEFAULT/ON UPDATE values combinations). Replaced 
  TABLE::time_stamp with TABLE::timestamp_default_now/on_update_now
  couple moved their setup to separate method set_timestamp_offsets(),
  which now is called from  open_table instead of Field_timestamp cons.
sql/field.h:
  Added more unireg types for handling of DEFAULT NOW() and ON UPDATE
  NOW() for TIMESTAMP fields.
  Fixed value corresponding to DEFAULT item for TIMESTAMP field.
sql/ha_berkeley.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_heap.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_innodb.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_isam.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_isammrg.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_myisam.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_myisammrg.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/item_func.h:
  We need to distinguish NOW() from other function for using in 
  DEFAULT and in ON UPDATE clauses.
sql/item_timefunc.h:
  We need to distinguish NOW() from other function for using in 
  DEFAULT and in ON UPDATE clauses.
sql/mysql_priv.h:
  Added parameter for ON UPDATE value to add_field_to_list() function.
sql/share/czech/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/danish/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/dutch/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/english/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/estonian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/french/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/german/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/greek/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/hungarian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/italian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/japanese/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/korean/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/norwegian-ny/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/norwegian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/polish/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/portuguese/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/romanian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/russian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/serbian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/slovak/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/spanish/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/swedish/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/ukrainian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/sql_base.cc:
  Added setup of TABLE::timestamp_default_now/on_update_now pair
  for each statement to open_table().
sql/sql_insert.cc:
  Using TABLE::timestamp_default_now/on_update_now pair instead of
  old TABLE::time_stamp. Added check for case then REPLACE could not
  be converted to UPDATE because of different DEFAULT/ON UPDATE values
  for TIMESTAMP field.
sql/sql_lex.h:
  Added member for value used in ON UPDATE clause to st_lex.
sql/sql_load.cc:
  Using TABLE::timestamp_default_now/on_update_now pair instead of
  old TABLE::time_stamp. We don't need to restore these members
  since they are set up for each statement in open_table().
sql/sql_parse.cc:
  Added handling of DEFAULT NOW() and ON UPDATE NOW() clauses for
  TIMESTAMP fields to add_field_to_list() function.
sql/sql_show.cc:
  Added support for DEFAULT CURRENT_TIMESTAMP (aka NOW() ) and 
  ON UPDATE CURRENT_TIMESTAMP to SHOW CREATE TABLE and SHOW COLUMNS.
sql/sql_table.cc:
  mysql_create_table() function - added check for number of TIMESTAMP 
    fields with auto-set values and replacing of old style TIMESTAMPs
    with their newer analogs.
  mysql_alter_table(): Using TABLE::timestamp_default_now/on_update_now 
    pair instead of old TABLE::time_stamp. We don't need to restore these
    members since they are set up for each statement in open_table().
sql/sql_update.cc:
  Left only setting of TABLE::timestamp_default_now/on_update_now
  to 0 since they should be already set up in open_table().
sql/sql_yacc.yy:
  Added support for DEFAULT NOW() and ON UPDATE NOW() in field
  definitions.
sql/table.h:
  Replaced TABLE::time_stamp withTABLE::timestamp_default_now/timestamp_on_update_now
  pair which allows to distinguish TIMESTAMP's with various DEFAULT/ON UPDATE
  clauses and optimize checks if TIMESTAMP field should be set to NOW()
  in handlers.
sql/unireg.cc:
  Now we are marking only TIMESTAMP fields with NOW() as default or
  as on update value as special field for unireg.

into sanja.is.com.ua:/home/bell/mysql/bk/work-on-4.1

into jabberwock.localdomain:/home/dlenev/src/mysql-4.1-775

Added two status variables: 
  binlog_cache_use - counts number of transactions that used somehow
    transaction temporary binary log.
  binlog_cache_disk_use - counts number of transactions that required
    disk I/O for storing info in this this binary log.


include/my_sys.h:
  Added disk_writes member to the IO_CACHE structure for counting number
  of times when IO_CACHE was forced to write to disk.
mysql-test/r/rpl_relayrotate.result:
  Fixed test result since added test for binlog_cache_use and 
  binlog_cache_disk_use status variables.
mysql-test/t/rpl_relayrotate.test:
  Added test for binlog_cache_use and binlog_cache_disk_use status 
  variables.
  Now dropping t1 table on master too.
mysys/mf_iocache.c:
  Added disk_writes member to the IO_CACHE structure for counting number
  of times when IO_CACHE was forced to write to disk.
sql/handler.cc:
  Added support for binlog_cache_use and binlog_cache_disk_use status
  variable. First one is incremented if transaction used somehow 
  transaction temporary binary log (doesn't matter in memory only or 
  with writes to disk), the second one is incremented if this binary 
  log was flushed to disk at some point.
sql/mysql_priv.h:
  Added declaration of status variables binlog_cache_use and 
  binlog_cache_disk_use.
sql/mysqld.cc:
  Added status variables binlog_cache_use and binlog_cache_disk_use.
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted

layout fised
debug information added


sql/item.cc:
  layout fix
  debug info
sql/sql_class.h:
  removed unused field

sql/mysqld.cc:
  Fix for bug #3359. Bad named pipe name

(
fixed BUG #2385 CREATE TABLE LIKE lacks locking on source and destination table
and added tests for it
)


sql/mysql_priv.h:
  added code TEST_SYNCHRONIZATION for --exit-info option
sql/mysqld.cc:
  fixed -debug prefix
sql/sql_table.cc:
  added synchronization in mysql_create_like_table
  (fixed BUG #2385 CREATE TABLE LIKE lacks locking on source and destination table)

BUG #2397 "RENAME TABLES is not blocked by FLUSH TABLES WITH READ LOCK"
(added waiting for global_read_lock in mysql_rename_tables)


mysql-test/r/rename.result:
  added test for 
  BUG #2397 "RENAME TABLES is not blocked by FLUSH TABLES WITH READ LOCK"
mysql-test/t/rename.test:
  added test for 
  BUG #2397 "RENAME TABLES is not blocked by FLUSH TABLES WITH READ LOCK"
sql/sql_rename.cc:
  fixed 
  BUG #2397 "RENAME TABLES is not blocked by FLUSH TABLES WITH READ LOCK"
  (added waiting for global_read_lock)

   distribution (this is more in line with how "make install" would install
   them) - this should also fix a test failure in the "system_mysql_db_fix"
   test.


BitKeeper/etc/ignore:
  Added cmd-line-utils/libedit/makelist to the ignore list

save moving ON/USING tables conditions to WHERE clause (BUG#2794)


sql/sql_base.cc:
  fix for table/field caching mechanism (global lock of it and right table passed as parameter)
  save moving ON/USING tables conditions to WHERE clause (BUG#2794)
sql/sql_class.cc:
  lock for using field/table cache in Item name resolution
sql/sql_class.h:
  lock for using field/table cache in Item name resolution
sql/sql_insert.cc:
  lock for using field/table cache in Item name resolution
tests/client_test.c:
  Test of PS queries with ON condition

BitKeeper/etc/logging_ok:
  auto-union
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_base.cc:
  Manual merge

table resolution".
Added members to Item_ident for storing original db, table and field
names since those that set later from Field have shorter life-time 
than required by prep. stmt. So we need to restore original names in 
Item_ident::cleanup(). Also now using special construnctor for creation
of Item_field from Field object that ensures that table and field name 
have big enough life-time.

"Fix" for bug #2050 "10 to 1 performance drop with server 4.1.1"
Clean ups in implementation of caching of field number in table.
Added caching of table in which field is found in find_field_in_tables(). 


sql/item.cc:
  Added members to Item_ident for storing original db, table and field
  names since those that set later from Field have shorter life-time 
  than required by prep. stmt. So we need to restore original names in 
  Item_ident::cleanup().
  Added Item_ident::cached_table for caching table there we found 
  our field.
  Added special constructor for creation of Item_field from Field object
  that ensures that table and field name have big enough life-time.
sql/item.h:
  Added members to Item_ident for storing original db, table and field
  names since those that set later from Field have shorter life-time 
  than required by prep. stmt. So we need to restore original names in 
  Item_ident::cleanup().
  Changed type of Item_ident::cached_field_index from int to uint
  (and so NO_CACHED_FIELD_INDEX is UINT_MAX now) because we want to
  save one comparison in find_field_in_table().
  Added Item_ident::cached_table for caching table there we found 
  our field.
  Added special constructor for creation of Item_field from Field object
  that ensures that table and field name have big enough life-time.
sql/mysql_priv.h:
  Changed type of cached_field_index_ptr from int* to uint*
  (and so NO_CACHED_FIELD_INDEX is UINT_MAX now) because we want to
  save one comparison in find_field_in_table().
sql/sql_acl.cc:
  Changed type of find_field_in_table() paremeter to make it 
  faster.
sql/sql_base.cc:
  find_field_in_table(): small optimization and soime clean ups in 
   caching of field index.
  find_field_in_tables(): added aggresive caching of table in which
   field is found in Item_ident::cached_table.
  insert_fields():
   using special construnctor for creation of Item_field from Field 
   object that ensures that table and field name have big enough life-time.

into gluh.mysql.r18.ru:/home/gluh/Bugs/mysql-4.1