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List of unstable tests for 10.4.12 release

List of unstable tests for 10.3.22 release

List of unstable tests for 10.2.31 release

List of unstable tests for 10.1.44 release

Bug#29630767 - USE OF UNINITIALIZED VALUE IN LIBMYSQL (CLIENT.CC FUNC…

…TION RUN_PLUGIN_AUTH)

List of unstable tests for 10.4.11 release

List of unstable tests for 10.3.21 release

List of unstable tests for 10.2.30 release

Fix shutdown hang in dict_stats , caused by MDEV-16264

dict_stats_shutdown() can hang, waiting for timer callback to finish.
This happens because locks the same mutex, which can also used inside
timer callback, within dict_stats_schedule() function.

Fix is to make dict_stats_schedule() use mutex.try_lock() instead of
mutex.lock().

In the unlikely case of simultaneous dict_stats_schedule() setting
different timer delays, now the first one would win, which is fine.
Important is that shutdown won't hang.