Fixed a wrong return code by the function init_key_cache.

into gw.mysql.r18.ru:/usr/home/ram/work/4.1.b1994

into eagle.mysql.r18.ru:/home/vva/work/BUG_1688/mysql-4.1

into mysql.com:/my/mysql-4.1

 - postinstall of the Mac OS X PKG failed as a parameter for 
   mysql_install_db was changed for MySQL 4.1
 - postinstall of the Server RPM failed as mysql_create_system_tables was
   missing from the file list

into mysql.com:/home/kostja/mysql/mysql-4.1-root

into mysql.com:/my/mysql-4.1

to mysqld that is executed for all new connections.
(Similar to the client command: mysql_options(... MYSQL_INIT_COMMAND ...).

QUERY_NO_GOOD_INDEX_USED and QUERY_NO_INDEX_USED moved from thd->lex.select_lex->options to thd->server_status

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

(isn't it obvious ?)

into mysql.com:/home/kostja/mysql/mysql-4.1-max_prep_stmt_count

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

into mysql.com:/bk/mysql-4.1

 - tagged ChangeSet 1.1641 as "mysql-4.1.1"

  minor edits

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

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

into mysql.com:/home/kostja/mysql/mysql-4.1-root

Second edition: error message was deleted as Segey suggested
Now name of the constraint will be used as the name of the key
if the last not specified

   added to manual.texi - extract it from there instead.

thd->command can be anything except COM_EXECUTE in no cases
except programming error.

Ensure that innodb is created for the first replication test as the slave-timeout is lower for future tests and this failed on some slower machines