I pushed more changes for MySQL 5.1.52 to Launchpad.
- export statistics for jemalloc - r3831, r 3835
- make connection accept faster - r3832, r3836, r3838, r3840, r3842, r3844, r3845, r3846, r3865
- Make IS.table_statistics support partitioned tables - r3837
- Make IS.table_statistics support InnoDB disk IO statistics for partitioned tables - r3843
- Add IO_READ_*_BLOB columns to IS.table_statistics - r3855
- Improve disk IO statistics for InnoDB - r3863
- Add option to prevent cross-shard queries - r3868