commit 84984b79 is null-merged

This commit sends a flag indicating the presence of the "--bypass"
option from the donor node to the joiner nodes during rsync IST,
because without such a flag it is impossible to distinguish IST
from the SST on the joiner nodes (in IST/SST scripts, because the
"--bypass" option is still not passed to scripts from server code).
Specifically, this fixes an issue with binary logs disappearing
after IST (via rsync). There are also changes to diagnostic messages
here that will make it easier to diagnose script-related problems
in the future when debugging and when checking the logs. This commit
also adds more robust signal handlers - to handle exceptions during
script execution. These handlers won't mask some crashes and it
also unifies exit codes between different scripts. These changes
have already been helpful to debugging "bypass" flag handling.

This commit fixes an issue with IST handling in
version 10.9 which is a regression after MDEV-26971
and related to trying to get a non-existent "total"
tag on the IST branch (this tag is only defined in
SST mode).

We cannot permanently change bits in read_partitions in the middle of
processing because ha_rnd_init()/ha_rnd_end() depends on that.

prefer if/skip over require
(works better with debugging, not affected by query log)

followup for c9b5a053

This reverts commit 17e0f522.

Function wsrep_read_only_option was already removed in commit
d54bc3c0 because it could cause race condition on variable
opt_readonly so that value OFF can become permanent.
Removed function again and added test case. Note that writes
to TEMPORARY tables are still allowed when read_only=ON.

same as MDEV-26412, but in CREATE...SELECT.
fix: apply 39feab3c to create rule too.

The counter srv_stats.key_rotation_list_length is never updated, and
therefore Innodb_encryption_key_rotation_list_length will always be 0.

The view INFORMATION_SCHEMA.INNODB_TABLESPACES_ENCRYPTION comes close
to reporting this information.

The counters were added in commit 5e55d1ce
and any code to update them was
inadvertently removed in commit 2e814d47
when applying InnoDB changes from MySQL 5.7.

Let us remove these counters that never reported anything useful. If such
statistics are really needed in a special case, they can be obtained by
instrumenting the code by some means, such as eBPF or a source code patch.

This patch fixes a problem that arises when a Galera node acts as a
replica for native replication. When parallel applying is enabled, it
is possible to end up with attempts to write binlog events with gtids
out of order. This happens because when multiple events are delivered
from the native replication stream and applied in concurrently, it is
for them to be replicated to the Galera cluster in an order which is
different from the original order in which they were committed in the
aync replication master.
To correct this behavior we now wait_for_prior_commit() before
replicating changes though galera. As a consequence, parallel appliers
may apply events in parallel until the galera replication step, which
is now serialized.

Add disconnect.

Decrease the number of tables and operations.

Arythmetic can overrun the uint type when possible group_concat_max_len
is multiplied to collation.mbmaxlen (can easily be like 4).
So use ulonglong there for calculations.

followup for d16c3aca

to make the all headers -std=c++20 clean for those, who need c++20
(some plugins)

- In best_extension_by_limited_search(), do not check for
  "(remaining_tables & real_table_bit)", it is guaranteed to be true.
  Make it an assert.
- In (!idx || check_interleaving_with_nj())", remove the !idx part.
  This check made sense only in the original version of this function.
- "micro optimization" in check_interleaving_with_nj().

The condition of the if statements are always true.

If a slave received a fake GLLE event after a GTID event
it would terminate the group. This adds a test for the
previous commit which fixed this issue (939672a).

Review by Andrei Elkin <andrei.elkin@mariadb.com>

GTID_LIST_EVENT or INCIDENT_EVENT.

It's legal to have either of the two inside a group. E.g
  Gtid_event, Gtid_log_list_event, Query_1, ... Xid_log_event
is permitted.
However, the slave IO thread treated both
as the terminal even when the group represents a DDL query.
That causes a premature Gtid state update so the slave IO would think
the whole group has been collected while in fact Query_1 etc are yet to process.

Fixed with correcting a condition to compute the terminal event
of the group.
Tested with rpl_mysqlbinlog_slave_consistency (of 10.9) and
rpl_gtid_errorlog.test.

Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>

The solution is to initialize field_ref_zero in main_low() before
xtrabackup_backup_func() and xtrabackup_prepare_func() calls.

Errors where:

/buildbot/amd64-ubuntu-2004-msan/build/sql/item.h:6478:12: error: 'val_datetime_packed' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]
  longlong val_datetime_packed(THD *thd)
           ^
/buildbot/amd64-ubuntu-2004-msan/build/sql/item.h:3501:12: note: overridden virtual function is here
  longlong val_datetime_packed(THD *thd) override;
           ^
/buildbot/amd64-ubuntu-2004-msan/build/sql/item.h:6480:12: error: 'val_time_packed' overrides a member function but is not marked 'override' [-Werror,-Winconsistent-missing-override]
  longlong val_time_packed(THD *thd)
           ^
/buildbot/amd64-ubuntu-2004-msan/build/sql/item.h:3502:12: note: overridden virtual function is here
  longlong val_time_packed(THD *thd) override;
           ^

remove AIX support, as 10.4 is not tested on AIX, so cannot test a regex

Make sure that nodes have correct auto_increment_offset when
they start and when control is turned on.

Fixed failing main.default on Windows
(to trigger an assert the test needed a debug build without
safemalloc, as 0xa5 happened to have the important bit set "correctly")