Ignore changed keyblocks when on does DELETE FROM table_name;

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

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

WHERE column_name = key_column_name was calculated as true
for NULL values.

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

Allocate HEAP blocks in smaller blocks to get better memory utilization and more speed when used with safemalloc.
Don't initalize memory areas when run with --skip-safemalloc.

into mysql.com:/space/my/mysql-4.0-automake