We missed this in commit 89633995.

Moved to the next problematic year (2038).

mtr_t::commit_files(): Renamed from mtr_t::commit_checkpoint().
Remove the redundant bool parameter, and instead use checkpoint_lsn=0
to indicate that no checkpoint marker should be written.

Modify configuration so that all nodes are part of galera cluster
i.e. wsrep_on=ON.

For Item_direct_view_ref , get value from val_* methods
instead of result* family
The val_* methods gets value from the item on which it is referred.

Redo log subsystem was decoupled from tablespace subsystem. It now manages file
descriptors for redo log files by itself.

FIL_TYPE_LOG: removed, code in various places was simplified

SRV_LOG_SPACE_FIRST_ID: renamed to SRV_SPACE_ID_UPPER_BOUND
  to better match its purpose. Code in various places was simplified

fil_n_log_flushes: replaced with log_sys::flushes
fil_n_pending_log_flushes: replaced with log_sys::pending_flushes

log_t::files::files: redo log file descriptors
log_t::files::file_names: redo log file names

log_t::files::set_file_names(): set file names without opening them
log_t::files::open_files(): opens redo log files
log_t::files::read(): treats several files as one big
log_t::files::write(): treats several files as one big
log_t::files::fsync(): flushes page cache to disk
log_t::files::close_files(): closes redo log files

fil_open_log_and_system_tablespace_files(): renamed to
  fil_open_system_tablespace_files()
  and obviously it now doesn't open redo log files

global files[1000]: removed. Why it was needed at all?

galera_parallel_autoinc_largetrx to stabilize it.

Assertion failed in wsrep-lib after transaction replay which
failed due to conflict in certification.

- Implemented reproducible test case MDEV-20793 to reproduce the crash.
- Fixed wsrep-lib to deal with certification error during replay.

buf_flush_init_for_writing(): If innodb_checksum_algorithm=full_crc32,
return even earlier.

The logic to reset garbage FIL_PAGE_TYPE fields applies to
data pages in old data files that were last written before
commit 3926673c was introduced.

When innodb_checksum_algorithm=full_crc32 is in effect, it only
applies to newly created data files. A file that was created in
full_crc32 format will keep that format. Other files will keep
some other format than full_crc32. Hence, the garbage-resetting
logic does not apply full_crc32 files.

The 8 bytes at FIL_PAGE_FILE_FLUSH_LSN_OR_KEY_VERSION
will be overwritten at page flush, in buf_page_encrypt_before_write(),
ever since commit 765a4360
(MariaDB 10.1.23, 10.2.6, 10.3.1).

btr_store_big_rec_extern_fields(): Remove useless writes to the
page header (and to the redo log) for ROW_FORMAT=COMPRESSED BLOB pages.

btr_cur_pessimistic_insert(): Relax a too strict debug assertion that
would fail when the function is invoked by btr_cur_pessimistic_update()
during innobase_add_instant_try(), that is, when updating the hidden
metadata record during a subsequent ADD COLUMN operation involves
splitting the leftmost clustered index leaf page.

This is a partial backport of 301bd62b
from 10.4.

Cause:
* row_start != 0 treated as it exists. Probably, possible row permutations had not been taken in mind.

Solution:
* Checking both row_start and row_end is correct, so versioned() function is used

MDEV-18875 Assertion `thd->transaction.stmt.ha_list == __null || trans == &thd->transaction.stmt' failed or bogus ER_DUP_ENTRY upon ALTER TABLE with versioning

Cause:
* when autocommit=0 (or transaction is issued by user),
 `ha_commit_trans` is called twice on ALTER TABLE, causing a duplicated
 insert into `transaction_registry` (ER_DUP_ENTRY).

Solution:
* ALTER TABLE makes an implicit commit by a second call. We actually
 need to make an insert only when it is a real commit. So is_real
 variable is additionally checked.

Instead of trying to detect MinProtocol=TLSv1.2 in all possible
sections of files in all possible locations where openssl is configured
to find its configuration in all possible distros (and these locations
are mutually different in Debian, Ubuntu, and RHEL, btw) - just make
mtr to instruct openssl not to read any config files at all.

This was broken since commit 193b5ed5

Removed hack with with_list

The function was only called by innobase_drop_tablespace(),
which was removed in commit 494e4b99
and added in commit 2e814d47.

MDEV-19680:: Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index) || (!(ptr >= table->record[0] && ptr < table->record[0] + table->s->reclength)))' or alike failed upon SELECT with mix of functions from simple view

Set read_set bitmap for view from the JOIN::all_fields list instead of JOIN::fields_list
as split_sum_func would have added items to the all_fields list.

The issue here is for degenerate joins we should execute the window
function but it is not getting executed in all the cases.

To get the window function values window function needs to be executed
always. This currently does not happen in few cases
where the join would return 0 or 1 row like
  1) IMPOSSIBLE WHERE
  2) MIN/MAX optimization
  3) EMPTY CONST TABLE

The fix is to make sure that window functions get executed
and the temporary table is setup for the execution of window functions

Also, suppress pcre2 warning, it is external project, its warnings should
not bother us.

Such CMake check is not relevant as the oldest supported gcc is 4.8 and
compiler issue was solved in gcc-4.6 already.
https://godbolt.org/z/7G64qo

cmp_data(): simplify code

innodb.cmake: restrict -fno-builtin-memcmp for GCC versions older that 4.6
where optimization issue was solved.