bunch. 

I intend to do some more accelerations in mysql_execute_command and
in SQLCOM_SELECT part for which I need to fix EXPLAIN with derived
tables plus few additional items. If this proves to be much I wil
just make it a new SCRUM task

Ignore changed keyblocks when on does DELETE FROM table_name;

into sinisa.nasamreza.org:/mnt/work/mysql-4.1

into fred.bitbike.com:/home/arjen/mysql-4.1

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

  Fix typo in earlier commit

  Fix bug: range estimator exaggerated small range size greatly if the paths in the B-tree happened to branch on a high level

into mysql.com:/space/my/mysql-3.23

Fixed the remaining join variations, (left, right, natural, etc).
(Previous fix only solved "," and "[cross] join".)

into mysql.com:/home/pem/work/mysql-4.0

create_tmp_table fails.

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

into sinisa.nasamreza.org:/mnt/work/mysql-4.1