MDEV-14871 Server crashes in fill_record / fill_record_n_invoke_before_triggers upon inserting into versioned table with trigger

Merge branch '10.3' into trunk

* show SYSTEM VERSIONED in INFORMATION_SCHEMA.TABLES
* show ROW START/ROW END columns in INFORMATION_SCHEMA.COLUMNS

must behave as any other generated column: an error in the strict mode,
a warning otherwise.

sys_trx_start -> row_start
sys_trx_end -> row_end

use system time, not @@timestamp

rename to test_versioning
set maturity to experimental

This bug affected tables where the PRIMARY KEY contains variable-length
columns, and ROW_FORMAT is COMPACT or DYNAMIC.

rec_init_offsets_comp_ordinary(): Do not short-cut the parsing
of the record header for records that contain explicit values
for instantly added columns.

rec_copy_prefix_to_buf(): Copy more header for records that
contain explicit values for instantly added columns.

row_purge_reset_trx_id(): Display a DBUG message about resetting the
DB_TRX_ID.

same change as for PSI_TABLE_CALL

it's correct, they preserve their documented names

remove unused error messages
reword ER_VERS_SYS_FIELD_NOT_HIDDEN->ER_VERS_SYS_FIELD_EXISTS

Many related changes.

Note that AS OF condition must always be pushed down to physical tables,
it cannot be applied to a derived or a view. Thus:

* no versioning for internal temporary tables, they can never store
  historical data.
* remove special versioning code from mysql_derived_prepare and
  remove ER_VERS_DERIVED_PROHIBITED - derived can have no historical
  data and cannot be prohibited for system versioning related reasons.
* do not expand select list for derived/views with sys vers fields,
  derived/views can never have historical data.
* remove special invisiblity rules for sys vers fields, they are no
  longer needed after the previous change
* remove system_versioning_hide, it lost the meaning after the
  previous change.
* remove ER_VERS_SYSTEM_TIME_CLASH, it's no "clash", the inner
  AS OF clause always wins.
* non-versioned fields in a historical query

reword the warning text, downgrade to note, don't
replace values with NULLs

CTE don't work, report MDEV-14820

compiler warning (mix of bool and enum in ?:)

in JOIN::inject_best_splitting_cond

The value of SplM_opt_info::last_plan should be set to NULL
before any search for a splitting plan for a splittable
materialized table.

MDEV-14821 Assertion `!is_set() || (m_status == DA_OK_BULK && is_bulk_op())` failed in Diagnostics_area::set_ok_status

In case libaio is not found, and required,
remove variables HAVE_LIBAIO_H and HAVE_LIBAIO from cache, so that cmake
rerun after installation of libaio would succeed.

Conflicts:
	mysql-test/r/cte_nonrecursive.result
	mysql-test/suite/galera/r/galera_bf_abort.result
	mysql-test/suite/galera/r/galera_bf_abort_get_lock.result
	mysql-test/suite/galera/r/galera_bf_abort_sleep.result
	mysql-test/suite/galera/r/galera_enum.result
	mysql-test/suite/galera/r/galera_fk_conflict.result
	mysql-test/suite/galera/r/galera_insert_multi.result
	mysql-test/suite/galera/r/galera_many_indexes.result
	mysql-test/suite/galera/r/galera_mdl_race.result
	mysql-test/suite/galera/r/galera_nopk_bit.result
	mysql-test/suite/galera/r/galera_nopk_blob.result
	mysql-test/suite/galera/r/galera_nopk_large_varchar.result
	mysql-test/suite/galera/r/galera_nopk_unicode.result
	mysql-test/suite/galera/r/galera_pk_bigint_signed.result
	mysql-test/suite/galera/r/galera_pk_bigint_unsigned.result
	mysql-test/suite/galera/r/galera_serializable.result
	mysql-test/suite/galera/r/galera_toi_drop_database.result
	mysql-test/suite/galera/r/galera_toi_lock_exclusive.result
	mysql-test/suite/galera/r/galera_toi_truncate.result
	mysql-test/suite/galera/r/galera_unicode_pk.result
	mysql-test/suite/galera/r/galera_var_auto_inc_control_off.result
	mysql-test/suite/galera/r/galera_wsrep_log_conficts.result
	sql/field.cc
	sql/rpl_gtid.cc
	sql/share/errmsg-utf8.txt
	sql/sql_acl.cc
	sql/sql_parse.cc
	sql/sql_partition_admin.cc
	sql/sql_prepare.cc
	sql/sql_repl.cc
	sql/sql_table.cc
	sql/sql_yacc.yy

row_sel_get_clust_rec_for_mysql(): Look up the page from the
buffer pool, similar to how MySQL 5.7 does it.

debug_key_management
encrypt_and_grep
innodb_encryption

If real table count is different from what is expected by the test, it
just hangs on waiting to fulfill hardcoded number. And then exits with
**failed** after 10 minutes of wait: quite unfriendly and hard to
figure out what's going on.