mysqltest now installs signal handlers and generates a stack trace if it crashes. (Bug#37003)

mysql-test-run.pl now supports --client-bindir and --client-libdir options for specifying the directory where client binaries and libraries are located. (Bug#34995)

Partitioning: Incompatible Change: On Mac OS X with lower_case_table_names = 2, the server could not read partitioned tables whose names contained uppercase letters.

Partitioned tables using mixed case names should be renamed or dropped before upgrading to this version of the server on Mac OS X. (Bug#37402)

Partitioning: Incompatible Change: This restores functionality missing since the removal of ALTER TABLE ... ANALYZE PARTITION, ALTER TABLE ... CHECK PARTITION, ALTER TABLE ... OPTIMIZE PARTITION, and ALTER TABLE ... REPAIR PARTITION in MySQL 5.1.24. (Bug#20129)

Replication: Issuing a DROP DATABASE while any temporary tables were open caused the server to switch to statement-based mode. (Bug#38773)

Replication: The --replicate-*-table options were not evaluated correctly when replicating multi-table updates.

As a result of this fix, replication of multi-table updates no longer fails when an update references a missing table but does not update any of its columns. (Bug#37051)

The fix for Bug#33812 had the side effect of causing the mysql client not to be able to read some dump files produced with mysqldump. To address this, that fix was reverted. (Bug#38158)