Quick grouping is not supported for JSON_OBJECTAGG. The same for GROUP_CONCAT too
so make sure that Item::quick_group is set to FALSE. We need to make sure that in
the case of JSON_OBJECTAGG we don't create an index over grouping fields of
the temp table and update the result after each iteration.
Instead we should first sort the result in accordance to the
GROUP BY fields and then perform the grouping and
write the result to the temp table.

Failure to do this causes crashes if query output is piped to an output
that requires a [pseudo] temporary table.

-DPLUGIN_COLUMNSTORE=YES or its analog.

Problem:
========
rpl.rpl_slave_alias_replica test fails sporadically on build bot as shown
below.

rpl.rpl_slave_alias_replica 'innodb,stmt' w4 [ fail ]
+++ /usr/local/mariadb-10.5.4-linux-x86_64/mysql-test/suite/rpl/r/
rpl_slave_alias_replica.reject	2020-06-12 09:52:25.191267945 +0000
@@ -22,6 +22,7 @@
 SHOW REPLICA HOSTS;
 Server_id	Host	Port	Master_id
 2	127.0.0.1	SLAVE_PORT	1
+2	127.0.0.1	SLAVE_PORT	1

Analysis:
========
The SHOW REPLICA HOSTS command reports an additional row for the same server
occasionally. This happens because of zombie dump threads on the master.
Error log from master also confirms that "A slave with the same
server_uuid/server_id as this slave has connected to the master". Since SHOW
REPLICA HOSTS goes through the list of dump threads and reports the
corresponding hosts,the same host is reported twice.

Fix:
===
Instead of capturing the SHOW REPLICA HOSTS command in result file use
wait_show_condition.inc. This will ensure that SHOW REPLICA HOSTS command
fetches slave host details.

Only affects DBUG builds

Exclude needs to be on receiving side too

It is possible that other excludes may need to be added to the receiving side too that exist on the sending side.

Fix for Galera rsync SST with the specific conditions listed in MDEV-21709

MDL_lock::Ticket_list::remove_ticket(): reduce algoritmic
complexity from O(N) to O(1)

MDL_lock::Ticket_list::clear_bit_if_not_in_list(): removed

MDL_lock::Ticket_list::m_type_counters: a map of ticket type
to count. Initialization is memset(0) which takes time.

use ilist instread of I_P_List because it's generally
slightly faster on inserting, removing and iterating

thread_safe_trx_ilist_t: almost generic one

UT_LIST was replaced with ilist<t>

innobase_kill_query: wrong comment removed.

MDEV-22981: Bad "default-character-set" option in [client] option group 50-client.cnf on Debian/Ubuntu

Remove unsuported parameter by some clients.

The parser must reject DDL operations on temporary objects when
they may modify or alter such object, including temporary tables and sequences.
The rejection is regardless (has been already in place for bin-loggable DML:s)
of the binlogging capability of the server or connection.

The patch implements the requirement. A binlog test is added.

Added a new test file for tests with delete using INNODB.

MDEV-22972 After upgrading server/client to 10.5 clients identified via non-builtin plugins cannot be authenticated

in 10.5.4 libmariadb3 plugins were moved to a new location

Contrary to our exceptations, it seems that a mini-transaction can
allocate a page that it had freed earlier. The function mtr_t::init()
is not prepared to deal with this, and it could happen that a
newly initialized page will be scrubbed instead. This can affect
the operation on page_compressed tables, or any InnoDB data files when
innodb_background_scrub_data_uncompressed=ON.

Also, buf_read_recv_pages() can interfere with the MDEV-8139 logic
during crash recovery.

Let us temporarily disable MDEV-8139 due to such concerns.

Note: Scrubbing will partially work thanks to MDEV-15528. Only in
cases where the page does not exist in the buffer pool at the time
of the page flush, we would skip the scrubbing action.

followup to script renaming

increase spider maturity accordingly

Added binutils dependency.

    Both RPM and DEB now conflicts on previous versions of MCS.

    Trim .deb packaging.

    MCS now depends on python. Python version varies in distributions.

Updated MCS

    Update MCS ref.