Merge MySQL 5.6.27

Registered by Laurynas Biveinis on 2015-07-20

https://github.com/percona/percona-server/pull/211

Merge MySQL 5.6.27.

Verify upstream fix and revert ours:
- https://bugs.launchpad.net/percona-server/+bug/1380985 / https://bugs.mysql.com/bug.php?id=76349
- https://bugs.launchpad.net/percona-server/+bug/1308016 / http://bugs.mysql.com/bug.php?id=76927

Check https://bugs.mysql.com/77667, add testcase if fixed.

Verify upstream fix for https://bugs.mysql.com/76727, re-enable our testcase if OK, re-enable savepoints in triggers and stored functions.

Add a testcase for 74589 (missed in 5.6.24)
Add a testcase for 74778 (missed in 5.6.25)
Add a testcase for 74851 (missed in 5.6.23)
Add a testcase for 74950
Add a testcase for 75230 (missed in 5.6.24)
Add a testcase for 76946

Fix for http://bugs.mysql.com/bug.php?id=72811 should be reconciled with our NUMA feature

Blueprint information

Status:
Complete
Approver:
Laurynas Biveinis
Priority:
Essential
Drafter:
Laurynas Biveinis
Direction:
Approved
Assignee:
Vlad Lesin
Definition:
Approved
Series goal:
Accepted for 5.6
Implementation:
Implemented
Milestone target:
milestone icon 5.6.27-75.0
Started by
Laurynas Biveinis on 2015-10-27
Completed by
Laurynas Biveinis on 2015-10-30

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