Prune to now-partition when there is no FOR SYSTEM_TIME clause.

Reusing the MIN()/MAX() fix_length_and_dec() related code for window functions
- FIRST_VALUE()
- LAST_VALUE()
- NTH_VALUE()
- LEAD()
- LAG

Part#2: update .result files for affected MyRocks tests

- Removing the wrong assert
- Re-enabling  multi_source.mdev-8874

Adding tests only.

This problem was earlier fixed in 10.4 by MDEV-17325 and backported to 10.3
with this commit:

  f4019f5b

Warning added.

Fix reinitialize vers_write on table reopen.

Make all accesses to btr_cur_n_non_sea atomic.

fix is simple: just move mp->file under mp->global protection

MDEV-18350 Using audit plugin with MySQL, mysqld crashes when running COM_INIT_DB against invalid database.

mysql_event_general structure changed in 10.3.
the database_length should be size_t now instead of the int.

Turn off versioned_write for DELETE HISTORY.

* Made make_versioned_*() proxies inline;
* Renamed truncate_history to delete_history

Part of:
MDEV-19814 Server crash in row_upd_del_mark_clust_rec or Assertion
`update->n_fields < ulint(table->n_cols + table->n_v_cols)' failed in
upd_node_t::make_versioned_helper

This removes the test combination
rocksdb_rpl.mdev12179 'innodb,row,row-write-committed-slave-gtid-optimized'
for which the server failed to start due to the invalid parameter
slave_gtid_info=optimized.

This was broken in 5173e396