Merge 'replication_applier_status_by_coordinator' table.

This table captures SQL_THREAD status in case of both single threaded and
multi threaded slave configuration. When multi_source replication is enabled
this table will display each source specific SQL_THREAD status.

Replaced following columns:
  - CHANNEL_NAME with CONNECTION_NAME
Added new columns for:
 - LAST_SEEN_TRANSACTION
 - LAST_TRANS_RETRY_COUNT

Merge 'replication_connection_configuration' table.

Replaced following columns:
  - CHANNEL_NAME with CONNECTION_NAME
  - AUTO_POSITION with MASTER_USE_GTID
Added new columns for:
  - IGNORE_SERVER_IDS
  - DO_DOMAIN_IDS
  - IGNORE_SERVER_IDS
Removed following columns as they are not part of mariadb replication
connection configuration:
  - NETWORK_INTERFACE
  - TLS_VERSION

Fix:
===
Iterate through rpl_parallel_thread_pool and display slave worker thread
specific information as part of 'replication_applier_status_by_worker' table.

---------------------------------------------------------------------------------
|Column Name:           |        Description:                                   |
|-------------------------------------------------------------------------------|
|                       |                                                       |
|THREAD_ID              | Thread_Id as displayed in 'performance_schema.threads'|
|                       | table for thread with name                            |
|                       | 'thread/sql/rpl_parallel_thread'                      |
|                       |                                                       |
|                       | THREAD_ID will be NULL when worker threads are stopped|
|                       | due to error/force stop                               |
|                       |                                                       |
|SERVICE_STATE          | Thread is running or not                              |
|                       |                                                       |
|LAST_SEEN_TRANSACTION  | Last GTID executed by worker                          |
|                       |                                                       |
|LAST_ERROR_NUMBER      | Last Error that occurred on a particular worker       |
|                       |                                                       |
|LAST_ERROR_MESSAGE     | Last error specific message                           |
|                       |                                                       |
|LAST_ERROR_TIMESTAMP   | Time stamp of last error                              |
|                       |                                                       |
|WORKER_IDLE_TIME       | Total idle time in seconds that the worker thread has |
|                       | spent waiting for work from SQL thread                |
|                       |                                                       |
|LAST_TRANS_RETRY_COUNT | Total number of retries attempted by last transaction |
---------------------------------------------------------------------------------


In case STOP SLAVE is executed worker threads will be gone, hence worker
threads will be unavailable. Querying the table at this stage will give empty
rows. To address this case when worker threads are about to stop, due to an
error or forced stop, create a backup pool and preserve the data which is
relevant to populate performance schema table. Clear the backup pool upon
slave start.

The idea of Alexander Barkov: to add name derived as a slect id.

into the engine directory

remove version data from the test output

The fix of MDEV-23456 (commit b1009ae5)
introduced a livelock between page flushing and a thread that is
executing buf_page_create().

buf_page_create(): If the current mini-transaction is holding
an exclusive latch on the page, do not attempt to acquire another
one, and do not care about any I/O fix.

mtr_t::have_x_latch(): Replaces mtr_t::get_fix_count().

dyn_buf_t::for_each_block(const Functor&) const: A new variant.

rw_lock_own(): Add a const qualifier.

Reviewed by: Thirunarayanan Balathandayuthapani

Due to a premature cleanup of the unit that specified a recursive CTE
used in the second operand of union the server fell into an infinite
loop in the reported test case. In other cases this premature cleanup
could cause other problems.
The bug is the result of a not quite correct fix for MDEV-17024. The
unit that specifies a recursive CTE has to be cleaned only after the
cleanup of the last external reference to this CTE. It means that
cleanups of the unit triggered not by the cleanup of a external
reference to the CTE must be blocked.
Usage of local table chains in selects to get external references to
recursive CTEs was not correct either because of possible merges of
some selects.

Also fixed a minor bug in st_select_lex::set_explain_type() that caused
typing 'RECURSIVE UNION' instead of 'UNION' in EXPLAIN output for external
references to a recursive CTE.

Analysis:
========
Writes to 'rli->log_space_total' needs to be synchronized, otherwise both
SQL_THREAD and IO_THREAD can try to modify the variable simultaneously
resulting in incorrect rli->log_space_total.  In the current test scenario
SQL_THREAD is trying to decrement 'rli->log_space_total' in 'purge_first_log'
and IO_THREAD is trying to increment the 'rli->log_space_total' in
'queue_event' simultaneously. Hence test occasionally fails with  result
mismatch.

Fix:
===
Convert 'rli->log_space_total' variable to atomic type.

MDEV-12353 deliberately tries to avoid memory alignment overhead in
log_phys_t, storing the stream of log records bytes straight after
a header object. But, offsetof() is not allowed on C++ data objects,
and neither are attempts to emulate it by invoking a member function
on a null pointer.

log_phys_t::len: Remove. Make it part of the byte stream that
immediately follow the object. Thanks to Eugene Kosov for this idea.

log_phys_t::start(): The start address of the following byte stream.

log_phys_t::len(): Compute len.

log_phys_t::alloc_size(): Use a simple sizeof calculation.

A follow-up fix, for original fix for MDEV-21577, which did not handle well
temporary tables.

OPTIMIZE and REPAIR TABLE statements can take a list of tables as argument,
and some of the tables may be temporary. Proper handling of temporary tables
is to skip them and continue working on the real tables. The bad version, skipped all tables,
if a single temporary table was in the argument list. And this resulted so that FK parent
tables were not scnanned for the remaining real tables. Some mtr tests, using OPTIMIZE or REPAIR
for temporary tables caused regressions bacause of this, e.g. galera.galera_optimize_analyze_multi

The fix in this PR opens temporary and real tables first, and in the table handling loop skips
temporary tables, FK parent scanning is done only for real tables.

The test has new scenario for OPTIMIZE and REPAIR issued for two tables of which one is temporary table.
Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>

This PR fixes same issue as MDEV-21577 for TRUNCATE TABLE.
MDEV-21577 fixed TOI replication for OPTIMIZE, REPAIR and ALTER TABLE
operating on FK child table. It was later found out that also TRUNCATE
has similar problem and needs a fix.

The actual fix is to do FK parent table lookup before TRUNCATE TOI
isolation and append found FK parent table names in certification key
list for the write set.

PR contains also new test scenario in galera_ddl_fk_conflict test where
FK child has two FK parent tables and there are two DML transactions operating
on both parent tables.

For development convenience, new TO isolation macro was added:
WSREP_TO_ISOLATION_BEGIN_IF and WSREP_TO_ISOLATION_BEGIN_ALTER macro was changed
to skip the goto statement.
Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>