(UPDATE|DELETE) ...WHERE MATCH bugfix.
MyISAM files.
--core-file now works on Solaris.
InnoDB to complain if it cannot find
free blocks from the buffer cache during recovery.
InnoDB insert buffer B-tree handling that could cause
crashes.
InnoDB lock timeout handling.
ALTER TABLE on a TEMPORARY InnoDB
table.
OPTIMIZE TABLE that reset index cardinality if it
was up to date.
t1 LEFT_JOIN t2 ... WHERE t2.date_column IS NULL when
date_column was declared as NOT NULL.
BDB tables and keys on BLOB columns.
MERGE tables on OS with 32-bit file pointers.
TIME_TO_SEC() when using negative values.