When we enter here wait_lock could be already gone i.e. NULL, that
should be allowed.

Building AWS C++ SDK as external project needs CMake 2.8.12
Centos7  out of the box has 2.8.11, thus the build fails.

Fixed check for required CMake version.

Fixed the 'wsrep_replicate_myisam' check to allow only limited
set of commands. Added a debug assert to discover such cases.

Update test case.

Internal updates to system statistical tables could wrongly
trigger an additional total-order replication if wsrep_repli
-cate_myisam is enabled.
Fixed by adding a check to skip total-order replication for
stat tables.

Test: galera.galera_var_replicate_myisam_on

thd->variables.option_bits need to be restored after
plugin_thdvar_init() during post initialization of
wsrep threads.

fix the tokudb_analyze_in_background_basic test to run on mariadb.  mariadb does additional value checking for boolean system variables

MDEV-10408 run the tokudb_rpl.rpl_rfr_disable_on_expl_pk_absence test.  Add control files.  Fixup result file for mariadb

MDEV-11182: InnoDB: Assertion failure in file buf0buf.cc line 4730 (encryption.create_or_replace fails in buildbot and outside)

Analysis: Problem is that page is encrypted but encryption information
on page 0 has already being changed.

Fix: If page header contains key_version != 0 and even if based on
current encryption information tablespace is not encrypted we
need to check is page corrupted. If it is not, then we know that
page is not encrypted. If page is corrupted, we need to try to
decrypt it and then compare the stored and calculated checksums
to see is page corrupted or not.

intentionally produces this error.

Add error message when used index_id in index page is not found
from configuration file.

Removed experimental from message.

Two problems:

(1) When pushing warning to sql-layer we need to check that thd != NULL
to avoid NULL-pointer reference.

(2) At tablespace key rotation if used key_id is not found from
encryption plugin tablespace should not be rotated.

MDEV-10394: Innodb system table space corrupted

Analysis: After we have read the page in buf_page_io_complete try to
find if the page is encrypted or corrupted. Encryption was determined
by reading FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION field from FIL-header
as a key_version. However, this field is not always zero even when
encryption is not used. Thus, incorrect key_version could lead situation where
decryption is tried to page that is not encrypted.

Fix: We still read key_version information from FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION
field but also check if tablespace has encryption information before trying
encrypt the page.

AWS C++ SDK always defaults region to us-east-1 for clientConfiguration
(ignoring config file or env.variable)

This patch introduces a plugin variable 'region' to make it usable
for master keys created in regions other than 'us-east-1'.

Update test results after 26b87c33

In the function create_key_parts_for_pseudo_indexes()
the key part structures of pseudo-indexes created for
BLOB fields were set incorrectly.
Also the key parts for long fields must be 'truncated'
up to the maximum length acceptable for key parts.

1. When min/max value is provided the null flag for it must be set to 0
in the bitmap Culumn_statistics::column_stat_nulls.
2. When the calculation of the selectivity of the range condition
over a column requires min and max values for the column then we
have to check that these values are provided.

           'mysql.proc' doesn't exist.

        The mysql_rm_db() doesn't seem to expect the 'mysql' database
        to be deleted. Checks for that added.
        Also fixed the bug MDEV-11105 Table named 'db'
        has weird side effect.
        The db.opt file now removed separately.

cherry-pick from 5.7:
  commit 6b24763
  Author: Manish Kumar <manish.4.kumar@oracle.com>
  Date:   Tue Mar 27 13:10:42 2012 +0530

  BUG#12977988 - ON STOP SLAVE: ERROR READING PACKET FROM SERVER: LOST CONNECTION
                 TO MYSQL SERVER
  BUG#11761457 - ERROR 2013 + "ERROR READING RELAY LOG EVENT" ON STOP SLAVEBUG#12977988 - ON STOP SLAVE: ERROR READING PACKET FROM SERVER: LOST CONNECTION
               TO MYSQL SERVER