Change logic to only allocate purge thds at startup, or
in pre-shutdown (for slow shutdown).

replaced CPACK_RPM_PACKAGE_VERSION with SERVER_VERSION.
CPACK_* variables are empty and can't be used until INCLUDE(CPack) is
called.
SERVER_VERSION is the safest option because other variables may be
overwritten from submodules

Buggy sepdebugcrcfix in CentOS 7 (rpm-4.11.3) does not restore
SUID bit after editing the binary. This is fixed in rpm-4.12.

Still let's not set SUID bit when installing auth_pam_tool
and use rpm spec %attr directive instead.

In a rebase of the merge, two preceding commits were accidentally reverted:
commit 112b2396 (MDEV-26308)
commit ac2857a5 (MDEV-25717)

Thanks to Daniele Sciascia for noticing this.

Changes:
- Don't include port in connection parameters with 'localhost' hostname

More info:

The hostname, if not specified or specified as '' or 'localhost', will default
to a MySQL server running on the local machine using the default for the UNIX socket.
To connect to a MySQL server on the local machine via TCP, you must specify the
loopback IP address (127.0.0.1) as the host.

To comply with what the perl module expects, we omit the port for a
host=localhost connection.

Reported issue: https://bugzilla.redhat.com/show_bug.cgi?id=1976224

Currently @@version_compile_machine is used by mtr
to determine if the compiled executable is 32 or 64
bits.

We extend that logic by ensuring that if the DEFAUT_MACHINE
name doesn't have "64" in its string, "-64bits" is appended
to ensure these test pass.

trx_purge_rseg_get_next_history_log(): Fix a race condition that
was introduced in commit e46f76c9
(MDEV-15912). The buffer pool page contents must not be accessed
while not holding a page latch. The page latch was released by
mtr_t::commit().

This race resulted in an ASAN heap-use-after-poison during a stress test.

To avoid potential race conditions between concurrent access to
dict_table_t::freed_indexes, let us consistently use
dict_table_t::autoinc_mutex.

dict_table_remove_from_cache_low(): To avoid extensive hold time
of table->autoinc_mutex, unconditionally free the FTS data structures.

ha_innobase::check_if_supported_inplace_alter(): Do not invoke
innobase_table_is_empty() if the tablespace has been discarded.
That is, native ALTER TABLE in InnoDB will treat an empty table
in the same way as a tablespace whose tablespace has been discarded.
(Note: ALTER TABLE...ALGORITHM=COPY will fail if the tablespace
has been discarded.)

This fixes a crash that was introduced
in commit c7559747 (MDEV-19611).

TABLE_LIST::calc_md5(): Remove an untruthful const qualifier.

thd_get_query_start_data(): Pass empty_clex_str instead of
an uninitialized LEX_CSTRING.

Problem:
=======
The last AHI page for two indexes of an dropped table is being
freed at the same time by two threads. One thread frees the
table heap and other thread tries to access table heap again.
It leads to asan failure in btr_search_lazy_free().

Solution:
========
InnoDB uses autoinc_mutex to avoid the race condition
in btr_search_lazy_free()

The "$mysql_statedir/debian-$MAJOR_VER.flag" is not used by any
maintainer script ("$mysql_datadir/debian-$MAJOR_VER.flag" is used,
https://github.com/MariaDB/server/blob/10.6/debian/mariadb-server-10.6.postinst#L164).

See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=985870

Fix also some minor typo.

Designated initializers were introduced in ISO/IEC 9899:1999 (C99),
but the C code base of MariaDB is supposed to be compatible with the
1990 version of the standard.

The InnoDB code based was switched from C to C++ in
MySQL 5.6 and MariaDB 10.0. C++ did not introduce syntax for
designated initializers until ISO/IEC 14882:2020.
Our C++ code base is still stuck with the 2011 or earlier version of
that standard.

Therefore, this check as well as the macro STRUCT_FLD are best removed.

This corrects the autobake on Stretch

Caused by commit 0268b871
and commit 3d16e0e1.

For very strange reasons (still a mistery) the above commits caused the
federatedx, archive and blackhole plugins to be missing in the
install location even though they where built in the build log.

This only occured on Stretch and not recent Ubuntu and Debian
distros.

The stretch autobake output contained:

dh_install: Cannot find (any matches for) "usr/lib/mysql/plugin/ha_archive.so" (tried in "." and "debian/tmp")
dh_install: mariadb-server-10.5 missing files: usr/lib/mysql/plugin/ha_archive.so
dh_install: Cannot find (any matches for) "usr/lib/mysql/plugin/ha_blackhole.so" (tried in "." and "debian/tmp")
dh_install: mariadb-server-10.5 missing files: usr/lib/mysql/plugin/ha_blackhole.so
dh_install: Cannot find (any matches for) "usr/lib/mysql/plugin/ha_federatedx.so" (tried in "." and "debian/tmp")
dh_install: mariadb-server-10.5 missing files: usr/lib/mysql/plugin/ha_federatedx.sodh_install: Cannot find (any matches for) "usr/lib/mysql/plugin/ha_archive.so" (tried in "." and "debian/tmp")
dh_install: mariadb-server-10.5 missing files: usr/lib/mysql/plugin/ha_archive.so
dh_install: Cannot find (any matches for) "usr/lib/mysql/plugin/ha_blackhole.so" (tried in "." and "debian/tmp")
dh_install: mariadb-server-10.5 missing files: usr/lib/mysql/plugin/ha_blackhole.so
dh_install: Cannot find (any matches for) "usr/lib/mysql/plugin/ha_federatedx.so" (tried in "." and "debian/tmp")
dh_install: mariadb-server-10.5 missing files: usr/lib/mysql/plugin/ha_federatedx.so

Remove commented out code, so that occasional reader is not confused.

It turns out, Field::set_notnull is required for a nullable I_S field.
Rework thread_pool_info.test to test request queueing in threadpool.

If --thread-pool-dedicated-listener is set, worker should not pick up
events. Dedicated listener constantly drains all events, thus polling
also from another thread makes no sense.

splitted permission setting to the 2 separate calls.
according to execute_process() doc, output from first command will be
piped to second which led to race and randomly lost suid bit from
auth_pam_tool.

foreign_push_index_error(): Fix a typo of 'match' that was introduced
in commit 5130f520 (MDEV-20480).

Thanks to Oli Sennhauser for reporting this.

Post-push fix for 10.5+.

The fix influence MDEV-14479. Before the fix
lock_rec_convert_impl_to_expl() did not create explicit lock if caller's
transaction owns found implicit lock(see MDEV-14479 for details). After the fix
lock_rec_convert_impl_to_expl() can create explicit lock under the above
conditions if the requested lock mode is not LOCK_REC_NOT_GAP. And that
is why we need to check if the table is X-locked before
lock_rec_convert_impl_to_expl() call.

The merge commit 4a259572
caused a test failure on Windows. The suppression regexp
needs to accept the backslash.

fil_invalid_page_access_msg(): Simplify the implementation
and invoke sql_print_error() directly.

fil_space_t::io(): Invoke fil_invalid_page_access_msg() only from
one location.

PageConverter::update_index_page(): Always validate the PAGE_INDEX_ID.
Failure to do so could cause a crash when iterating
secondary index pages. This was caught by the 10.4 test
innodb.full_crc32_import.