functions.

There is no reason to export IO this functionality from server, if it can
be easily implemented with CRT.

Note: for the sake of compatibility, we do not use _open() on Windows,
but open file with CreateFile, with FILE_SHARE_DELETE flag,
so it can be renamed or deleted when open. Also atomic append flag is used.

Fixes some warnings.

fil_space_extend_must_retry(): If the table is being truncated,
do not call fil_flush_low(). The operation is covered by the
truncate log. File extension during TRUNCATE only occurs
if there are many indexes on the table. With smaller innodb_page_size,
the file extension occurs already with fewer indexes on the table.

This is error-prone and causes warnings on Windows

wrep_sst_common and wsrep_sst_xtrabackup-v2 bugfixes to read sst parameters from configs

The function dict_disable_redo_if_temporary() was supposed to
disable redo logging for temporary tables. It was invoked
unnecessarily for two read-only operations:
row_undo_search_clust_to_pcur() and
dict_stats_update_transient_for_index().

When a table is not temporary and not in the system tablespace,
the tablespace should be flagged for MLOG_FILE_NAME logging.
We do not need this overhead for temporary tables. Therefore,
either mtr_t::set_log_mode() or mtr_t::set_named_space() should
be invoked.

dict_table_t::is_temporary(): Determine if a table is temporary.

dict_table_is_temporary(): Redefined as a macro wrapper for
dict_table_t::is_temporary().

dict_disable_redo_if_temporary(): Remove.

The method handlerton::replace_native_transaction_in_thd was added
into MySQL 5.7 in WL#6860, Binlogging XA-prepared transaction.
In MariaDB we do not have that change yet.

The field dict_table_t::big_rows was only used for determining if
the adaptive hash index should be used when the internal InnoDB SQL
parser is used. That parser is only used for modifying the InnoDB
data dictionary, updating persistent tables, and for fulltext indexes.

btr_cur_pessimistic_delete(): Discard a possible record lock also in
the case when the record was the only one in the page. Failure to
do this would corrupt the record lock data structures in a partial
rollback (ROLLBACK TO SAVEPOINT or rolling back a row operation due
to some error, such as a duplicate key in a unique secondary index).

MySQL 5.7 allows the creation of InnoDB tables in a user-created
tablespace, but MariaDB does not. Remove the remaining references.

This is a non-functional change.

wrep_sst_common: Setting "-c ''" for my_print_defaults just takes no values from config at all. $MY_PRINT_DEFAULTS is already set at the top of the script to have --defaults-file and --defaults-extra-file. If WSREP_SST_OPT_CONF if set to "--defaults-file=/etc/my.cnf --defaults-extra-file=/etc/my.extra.cnf", then "my_print_defaults -c "" --defaults-file=/etc/my.cnf" succeeds, but if WSREP_SST_OPT_CONF is empty - no default values are taken at all.
wsrep_sst_xtrabackup-v2: innobackupex does not support --defaults-extra-file, so ${WSREP_SST_OPT_CONF} cannot be used as an argument, it has been changed to ${WSREP_SST_OPT_DEFAULT}. Removed --defaults-file= from INNOMOVE line, because WSREP_SST_OPT_CONF already includes it (INNOBACKUP was fine, INNOMOVE - not).

warning

Only microsoft compiler, which can be correctly
tested with #ifdef _MSC_VER) has __declspec(noreturn)

Prior to this patch, creating or even opening any innodb file in 10.2
would set a sparse flag on file. The file extension was done by setting
end of file, without writing zeros. This technique is fine, however
due to sparsedness, it created a hole at the end of the file, which
lead to much higher fragmentation subsequently.

The fix is only to use sparse flag for compressed tables, where holes
are actually wanted, but not for normal tables.

'version' variables.

The warnings occur on Windows build, yet they are also are valid
on 32bit Unix.

Fix is to consistently use 64bit integer on all platforms.

some ulonglong variables were printed as %lu

upd_field_set_field_no(): Remove the unused parameter trx, and
remove a debug message. In debug builds, the out-of-bounds access
would still be caught by dict_index_get_nth_col().

trx_undo_update_rec_get_update(): Remove the unnecessary parameter trx.

The InnoDB native partitioning (ha_innopart) is a MySQL 5.7
code refactoring exercise that was not merged to MariaDB.

Patch contibuted by Gordon Fisher. Thank you for your contribution!

Fixes some warnings in popular headers.

- Fix win64 pointer truncation warnings
(usually coming from misusing 0x%lx and long cast in DBUG)

- Also fix printf-format warnings

Make the above mentioned warnings fatal.

- fix pthread_join on Windows to set return value.

After review cleanup.

- The line was accidently removed by dd8474b1
- The effect of the missing test was just a few extra malloc when creating
  internal temporary tables. Nothing critical, but better got get fixed.

Update.rdiff fle

Also, introduce my_popen()/my_fgets() wrapper function for popen()/fgets()
in mysqltest to workaround a popen() bug in Windows C runtime,
mentioned in MDEV-9409

This workaround was used previously for "exec". From now on, it is also
used are used also for "perl" snippets.

reapply 6192f0bf

TSAN warnings count decreased from 206 to 195

fix some old bad merge

avoid a function call for a commonly used one-liner.
followup for 0627929f