SET SQL_LOG_UPDATE=0 caused a lockup of the server.
New SQL command: FLUSH [ TABLES | HOSTS | LOGS | PRIVILEGES ] [, ...]
New SQL command: KILL thread_id.
Added casts and changed include files to make MySQL easier to compile on AIX and DEC OSF/1 4.x
Fixed conversion problem when using ALTER TABLE from a INT to a short CHAR() column.
Added SELECT HIGH_PRIORITY; this will get a lock for the SELECT even if there is a thread waiting for another SELECT to get a WRITE LOCK.
Moved wild_compare() to string class to be able to use LIKE on BLOB/TEXT columns with \0.
Added ESCAPE option to LIKE.
Added a lot more output to mysqladmin debug.
You can now start mysqld on Windows with the --flush option. This will flush all tables to disk after each update. This makes things much safer on the Windows platforms but also much slower.