First version of new authentification procedure: now authentification is one-stage (instead of two-stage in 4.1)

For now following tasks have been done:
- PASSWORD() function was rewritten. PASSWORD() now returns SHA1
  hash_stage2; for new passwords user.password contains '*'hash_stage2; sql_yacc.yy also fixed; 

- password.c: new functions were implemented, old rolled back to 4.0 state

- server code was rewritten to use new authorization algorithm (check_user(), change
  user, and other stuff in sql/sql_parse.cc)

- client code was rewritten to use new authorization algorithm
  (mysql_real_connect, myslq_authenticate in sql-common/client.c)

- now server barks on 45-byte-length 4.1.0 passwords and refuses 4.1.0-style
  authentification. Users with 4.1.0 passwords are blocked (sql/sql_acl.cc)

- mysqladmin.c was fixed to work correctly with new passwords

Tests for 4.0-4.1.1, 4.1.1-4.1.1 (with or without db/password) logons was performed;
mysqladmin also was tested. Additional check are nevertheless necessary.


BitKeeper/etc/ignore:
  Added start_mysqld.sh mysys/main.cc to the ignore list
client/mysqladmin.c:
  fixed with new password api
include/mysql.h:
  So as scramble_323 accepts only null-terminated message, two scramble buffs are necessary.
  gotta be fixed
include/mysql_com.h:
  new constants and password.c api changes
libmysql/libmysql.c:
  mysql_change_user rewritten to work with new password api
scripts/mysql_create_system_tables.sh:
  fixed 'Password' column length to 41
scripts/mysql_fix_privilege_tables.sql:
  fixed 'Password' column length to 41
sql-common/client.c:
  mysql_real_connect rewritten to support new handshake procedure
sql/item_strfunc.cc:
  Item_func_password and Item_func_old_password rewritten with new password api
sql/item_strfunc.h:
  bit commented, numbers replaced with #defined constants
sql/mysql_priv.h:
  removed unnecessary declaration as now all constants defined is in mysql_com.h
sql/mysqld.cc:
  scramble initialization moved to sql_parce.cc:check_connection
sql/password.c:
  All 4.1 functions were rolled back to 4.0 with attempt to save all possible 4.0-4.1 changes.
  Names for 4.0 functions were suffixed with '_323'
  Functions for new handshake were added.
sql/slave.cc:
  Fixed to new constant; Bug #766 remains to be fixed
sql/slave.h:
  fixed to new constant; Buf #766 remains to be fixed
sql/sql_acl.cc:
  rewritten to support new passwords (41 byte-long) and password api
sql/sql_acl.h:
  ditto
sql/sql_class.cc:
  initialization for new members added
sql/sql_class.h:
  same thing as in struct mysql - scramble is used for new family of functions, scramble_323 - for old
sql/sql_parse.cc:
  check_connections was renamed to check_connection as this name reflects better what this function does
  authorization part of check_connection was rewritten
  check_user was rewritten with new password and acl api
  new function 'authenticate', which optionally re-request scramble from client was added
  fixed some typos
  COM_CHANGE_USER piece of dipsatch_command() was rewritten
sql/sql_repl.h:
  HASH_PASSWORD_LENGTH replaced with SCRAMBLED_PASSWORD_CHAR_LENGTH
  bug #766 remains
sql/sql_yacc.yy:
  Two-argument form of PASSWORD() was removed
  PASSWORD() function was fixed with new password api.
BitKeeper/etc/logging_ok:
  Logging to logging@openlogging.org accepted

sql/item_cmpfunc.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/sql_select.cc:
  Auto merged

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

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

(resolving fields of reduced subselect)


mysql-test/r/subselect.result:
  test of bug #745
mysql-test/t/subselect.test:
  test of bug #745
sql/sql_union.cc:
  to get chance of outer resolved_fields resolve fields of result table as usual fileds

sql/item.cc:
  Auto merged
mysql-test/r/subselect.result:
  SCCS merged
mysql-test/t/subselect.test:
  SCCS merged

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


sql/sql_select.cc:
  Auto merged

test moved to other bug 

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

sql/item.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged

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


sql/sql_select.cc:
  Auto merged

into teton.kitebird.com:/home/paul/mysql-4.1

into rhols221.adsl.netsonic.fi:/home/my/bk/mysql-4.1

into mysql.com:/space/my/mysql-4.1-build

  A better comment


sql/item.cc:
  A better comment

and comparison was done binary. Now, a binary string wins a character sting 
taking in account their derivation. That means a character field wins a
binary literal and comparison is done according to the character field
collation, not binary. 

acinclude.m4:
   - fixed typo (dbl -> dnl)

into teton.kitebird.com:/home/paul/mysql-4.1


sql/share/czech/errmsg.txt:
  Auto merged
sql/share/danish/errmsg.txt:
  Auto merged
sql/share/dutch/errmsg.txt:
  Auto merged
sql/share/english/errmsg.txt:
  Auto merged
sql/share/estonian/errmsg.txt:
  Auto merged
sql/share/french/errmsg.txt:
  Auto merged
sql/share/german/errmsg.txt:
  Auto merged
sql/share/greek/errmsg.txt:
  Auto merged
sql/share/hungarian/errmsg.txt:
  Auto merged
sql/share/italian/errmsg.txt:
  Auto merged
sql/share/japanese/errmsg.txt:
  Auto merged
sql/share/korean/errmsg.txt:
  Auto merged
sql/share/norwegian-ny/errmsg.txt:
  Auto merged
sql/share/norwegian/errmsg.txt:
  Auto merged
sql/share/polish/errmsg.txt:
  Auto merged
sql/share/portuguese/errmsg.txt:
  Auto merged
sql/share/romanian/errmsg.txt:
  Auto merged
sql/share/russian/errmsg.txt:
  Auto merged
sql/share/serbian/errmsg.txt:
  Auto merged
sql/share/slovak/errmsg.txt:
  Auto merged
sql/share/spanish/errmsg.txt:
  Auto merged
sql/share/swedish/errmsg.txt:
  Auto merged
sql/share/ukrainian/errmsg.txt:
  Auto merged

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

  Change mode to -rw-rw-r--


mysql-test/t/preload.test:
  Change mode to -rw-rw-r--

REPLACE() now processed arguments collations according to standard

fixed BUG #726


mysql-test/r/subselect.result:
  test of bug #726
mysql-test/t/subselect.test:
  test of bug #726
sql/item_cmpfunc.cc:
  cond_count moved to SELECT_LEX_NODE
sql/item_subselect.cc:
  fixed current_select pointer
sql/sql_base.cc:
  cond_count moved to SELECT_LEX_NODE
sql/sql_class.cc:
  cond_count moved to SELECT_LEX_NODE
sql/sql_class.h:
  cond_count moved to SELECT_LEX_NODE
sql/sql_lex.cc:
  cond_count moved to SELECT_LEX_NODE
sql/sql_lex.h:
  cond_count moved to SELECT_LEX_NODE
sql/sql_select.cc:
  cond_count moved to SELECT_LEX_NODE

scripts/mysql_create_system_tables.sh:
  Fixed bug: mysql-test failure on rpl tests

into mysql.r18.ru:/usr/home/bk/mysql-4.1

sql/field.h:
  Auto merged
sql/item_sum.cc:
  Auto merged

  My stupid typo fix


sql/item_func.cc:
  My stupid typo fix
  ,

into bar.mysql.r18.ru:/usr/home/bar/mysql-4.1

now process arguments according to standard SQL collation determation
rules.

into mysql.r18.ru:/usr/home/bk/mysql-4.1

tests/client_test.c:
  test for SQL_MODE with PIPES_AS_CONCAT, ANSI and IGNORE_SPACE