Changes
-- Added force-restart option for mtr to always restart servers between tests
-- Added wait_condition_with_debug to wait until the passed statement returns true, or the operation times out. If operation times out, the additional error statement will be executed
-- Rewritten MW-336 test case

Changes to be committed:
	modified:   suite/galera/r/MW-336.result
	modified:   suite/galera/t/MW-336.test
	modified:   suite/wsrep/t/variables.test

Problem was that tests select INFORMATION_SCHEMA.PROCESSLIST processes
from user system user and certain state. However, state could be unexpected.

Added new status variables that store current amount of applier threads
(wsrep_applier_thread_count) and rollbacker threads
(wsrep_rollbacker_thread_count). This will make clear how many slave threads
of certain type there is. Additionally, added THD state "wsrep applier idle"
when applier slave thread is waiting for work.

Modified tests to use wsrep_applier_thread_count when waiting slave threads
to start.

Changes to be committed:
	modified:   mysql-test/suite/galera/disabled.def
	modified:   mysql-test/suite/galera/r/MW-336.result
	modified:   mysql-test/suite/galera/r/galera_var_slave_threads.result
	modified:   mysql-test/suite/galera/t/MW-336.test
	modified:   mysql-test/suite/galera/t/galera_kill_applier.test
	modified:   mysql-test/suite/galera/t/galera_parallel_autoinc_largetrx.test
	modified:   mysql-test/suite/galera/t/galera_parallel_autoinc_manytrx.test
	modified:   mysql-test/suite/galera/t/galera_var_slave_threads.test
	modified:   mysql-test/suite/wsrep/disabled.def
	modified:   mysql-test/suite/wsrep/r/variables.result
	modified:   mysql-test/suite/wsrep/t/variables.test
	modified:   sql/wsrep_mysqld.cc
	modified:   sql/wsrep_mysqld.h
	modified:   sql/wsrep_thd.cc
	modified:   sql/wsrep_var.cc

Changes to be committed:
	modified:   suite/galera/r/galera_kill_ddl.result
	modified:   suite/galera/r/galera_sync_wait_show.result
	modified:   suite/galera/t/galera_kill_ddl.test

rebuild galera.galera_as_slave_gtid and multi_source.mdev-8874

Changes to be committed:
	modified:   ../galera/disabled.def
	modified:   ../galera/r/GAL-419.result
	modified:   ../galera/t/GAL-419.test
	modified:   ../galera/t/galera_ist_innodb_flush_logs.test
	modified:   ../galera/t/galera_ist_mariabackup_innodb_flush_logs.test

MDEV-17963: Assertion `field_pos < field_count' failed in Protocol_text::store, Assertion `field_handlers == 0 || field_pos < field_count'

The problem was that sp_head::MULTI_RESULTS was not set correctly for ANALYZE statement
with SELECT ... INTO variable.
This is a follow up fix for MDEV-7023

No known reproduction on 10.2

MDEV-16222 Assertion `0' failed in row_purge_remove_sec_if_poss_leaf on table with virtual columns and indexes

MDEV-16222 Assertion `0' failed in row_purge_remove_sec_if_poss_leaf on table with virtual columns and indexes

Cause
Stale thd->m_stmt_da->m_sql_errno which is from different invocation.

Fix
Reset error state before attempt to open table.

Another fail fix:

undefined reference to `ZipLoadFile`

This was caused by 7f2cfa8f

MDEV-19292 "Row size too large" error when creating table with lots columns when row format is DYNAMIC or COMPRESSED

Basic idea of the patch: disallow creating tables which allow to create
rows which are too big to insert. In other words, if user created a table user
should never see an errors like 'can not insert row as it is too big for current
page size'.

SET innodb_strict_mode=OFF; will allow to create very long tables and only a
warning will be issued.

dict_table_t::get_overflow_field_local_len(): this function lets know a maximum
local field len for overflow fields for every file and row format.

innobase_check_column_length(): improve name to too_big_key_part_length()
and reuse in a different part of code.

create_table_info_t::prepare_create_table(): add check for maximum allowed
key part length to keep ALGORITHM=COPY behavior similar to ALGORITHM=INPLACE
behavior. Affected test is innodb.strict_mode

Rename dict_index_too_big_for_tree() to
dict_index_t::rec_potentially_too_big(): copy overflow-related size computation
from dtuple_convert_big_rec(). A lot of tests was changed because of that.
I wonder whether users will complain about it?

Test innodb.max_record_size tests dict_index_t::rec_potentially_too_big()
for different row formats and page sizes.

Adding tests for MDEV-17857 Assertion `tmp != ((long long) 0x8000000000000000LL)' failed in TIME_from_longlong_datetime_packed upon SELECT with GROUP BY

(they were forgotten in the previous commit)

while client tools technically don't need or depend on libmariadb3.so,
they need client plugins, that come with it.

MDEV-17857 Assertion `tmp != ((long long) 0x8000000000000000LL)' failed in TIME_from_longlong_datetime_packed upon SELECT with GROUP BY

Changes to be committed:
	modified:   suite/galera/disabled.def
	modified:   suite/galera/r/MW-329.result
	modified:   suite/galera/r/galera_var_notify_cmd.result
	modified:   suite/galera/t/MW-329.test
	modified:   suite/galera/t/galera_binlog_stmt_autoinc.test
	modified:   suite/galera/t/galera_var_notify_cmd.test

Add sync wait to make sure selects see correct consistent db.

for passing ones.

Changes to be committed:
	new file:   mysql-test/std_data/galera-cert.pem
	new file:   mysql-test/std_data/galera-key.pem
	new file:   mysql-test/std_data/galera-upgrade-ca-cert.pem
	new file:   mysql-test/std_data/galera-upgrade-server-cert.pem
	new file:   mysql-test/std_data/galera-upgrade-server-key.pem
	modified:   mysql-test/suite/galera/disabled.def
	modified:   mysql-test/suite/galera/r/MW-416.result
	modified:   mysql-test/suite/galera/r/MW-44.result
	modified:   mysql-test/suite/galera/r/galera_sst_mysqldump_with_key,debug.rdiff
	modified:   mysql-test/suite/galera/r/galera_sst_mysqldump_with_key.result
	modified:   mysql-test/suite/galera/t/MW-416.test
	modified:   mysql-test/suite/galera/t/galera_kill_applier.test

mysqld_safe shouldn't try to mkdir or chown if --dry-run

MDEV-19481 mariadb-10.3.15-linux-systemd-x86_64/bin/mysqld: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' and 'GLIBCXX_3.4.21' not found

don't ignore LIBSYSTEMD_LDFLAGS when trying out systemd

(and put them in LIBSYSTEMD, because MYSQLD_LINK_FLAGS has stuff like
-lmtmalloc and is used only for mysqld, not for, say, explain_filename-t)

LIBSYSTEMD_LDFLAGS come from libsystemd.pc via pkg-config

(Cumulative diff, back-port to 10.2)
Remove other unneeded files which cause compile
warnings-treated-as-errors errors on Windows.

'syslog' output type disabled on Windows.

Up to MariaDB 10.2, field_name is still a C-style string.