Added SLAVE START and SLAVE STOP statements.

Added TYPE=QUICK option to CHECK and to REPAIR.

Fixed bug in REPAIR TABLE when the table was in use by other threads.

Added a thread cache to make it possible to debug MySQL with gdb when one does a lot of reconnects. This will also improve systems where you can't use persistent connections.

Lots of fixes in the Berkeley DB interface.

UPDATE IGNORE will not abort if an update results in a DUPLICATE_KEY error.

Put CREATE TEMPORARY TABLE commands in the update log.

Fixed bug in handling of masked IP numbers in the privilege tables.

Fixed bug with delay_key_write tables and CHECK TABLE.

Added replicate-do-db and replicate-ignore-db options to mysqld, to restrict which databases get replicated.

Added SQL_LOG_BIN option.