Automatically add SQL_BUFFER_RESULT if INSERT is done from 
SELECT comprising a table to be inserted in.

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

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

into deer.mysql.r18.ru:/home/hf/work/mysql-4.1.w1

into myvenu.com:/home/venu/bk/src-4.1

  Remove the question of Monty about user_thd / NULL after a merge from 4.0 to 4.1, user_thd is the right value in 4.1

embedded-related changes

This fixes a problem with SHOW PROCESSLIST

This fixes a possible core dump problem in SHOW PROCESSLIST

into myvenu.com:/home/venu/work/sql/dev-4.1

into myvenu.com:/home/venu/bk/src-4.1

into eagle.mysql.r18.ru:/home/vva/work/add_libedit/experiment/4.1.control

into eagle.mysql.r18.ru:/home/vva/work/add_libedit/experiment/4.1.clone

Don't use new password format if mysql.user has old format
tables_priv was not reset on FLUSH PRIVILEGES if tables_priv was empty
Portability fixes for Windows

into hundin.mysql.fi:/home/heikki/mysql

  Backport from 4.0: fix bug in adaptive hash index search

  Fix a crash in page_dir_find_owner_slot if an adaptive hash index search coincides with purge or an insert