echo is needed for the tests

Add a possibility to run MTR tests on a release zip

we don't build debian release builds with them anyway,
but let's make it explicit, independently on what happens to be
installed on the builder.

THD::copy_db_to(): Always return true if the output parameter
was left uninitialized. This fixes a regression that was caused
by commit 7d0d934c (MDEV-16473).

MariaDB Server 10.3 and later were unaffected by this bug
thanks to commit a7e352b5.

Possibly this bug only affects mysql_list_fields()
in the Embedded Server (libmysqld).

This bug was found by GCC 11.2.0 in CMAKE_BUILD_TYPE=RelWithDebInfo.

init_mutex_v1_t: Stop lying that the mutex parameter is const.
GCC 11.2.0 assumes that it is and could complain about any mysql_mutex_t
being uninitialized even after mysql_mutex_init() as long as
PLUGIN_PERFSCHEMA is enabled.

init_rwlock_v1_t, init_cond_v1_t: Remove untruthful const qualifiers.

Note: init_socket_v1_t is expecting that the socket fd has already
been created before PSI_SOCKET_CALL(init_socket), and therefore that
parameter really is being treated as a pointer to const.

if all options from a combination from the combinations file are already
present in the server's list of options, then don't try to run tests
in other combinations from this file.

old behavior was: if at least one option from a combination is
already present in the list...

Thanks to Theodore Brockman on Zulip for noticing
on an OSX ARM64 and testing this patch.

Per https://github.com/google/cpu_features/pull/150/files
CMAKE_SYSTEM_PROCESSOR is arm64 on Apple.

Without this, compulation error:

[ 80%] Building CXX object storage/rocksdb/CMakeFiles/rocksdblib.dir/rocksdb/util/crc32c.cc.o
/mariadb/storage/rocksdb/rocksdb/util/crc32c.cc:500:18: error: use of undeclared identifier 'isSSE42'
  has_fast_crc = isSSE42();
                 ^
/mariadb/storage/rocksdb/rocksdb/util/crc32c.cc:1230:7: error: use of undeclared identifier 'isSSE42'
  if (isSSE42()) {
      ^
/mariadb/storage/rocksdb/rocksdb/util/crc32c.cc:1231:9: error: use of undeclared identifier 'isPCLMULQDQ'
    if (isPCLMULQDQ()) {
        ^

This can be reverted when the RocksDB submodule is updated.

https://github.com/facebook/rocksdb/commit/ee4bd4780b321ddb5f92a0f4eb956f2a2ebd60dc

FLUSH PRIVILEGES hasn't been needed for very many years.

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.

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.

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.

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.

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.

Due to an integer overflow an invalid size of ref_pointer_array could be
allocated.

Using size_t allows this continue. Allocation failures are
handled gracefully if the value is too big.

Thanks to Zuming Jiang for the bug report and fuzzing MariaDB.

Reviewer: Sanja

Main idea: don't log-and-crash but propogate error to the upper layers of stack
to handle it and show to a user.

Import operation without .cfg file fails when there is mismatch of index
between metadata table and .ibd file. Moreover, MDEV-19022 shows
that InnoDB can end up with index tree where non-leaf page has only
one child page. So it is unsafe to find the secondary index root page.

This patch does the following when importing the table without .cfg file:

1) If the metadata contains more than one index then InnoDB stops
the import operation and report the user to drop all secondary
indexes before doing import operation.

2) When the metadata contain only clustered index then InnoDB finds the
index id by reading page 0 & page 3 instead of traversing the
whole tablespace.

pars_info_bind_id(): Remove the parameter copy_name. It was always
being passed as constant TRUE or true. It turns out that copying
the string is completely unnecessary. In all calls except the one
in fts_get_select_columns_str() and fts_doc_fetch_by_doc_id(),
the parameter is being passed as a compile-time constant, and therefore
the pointer cannot become stale. In that special call, the string
that is being passed is allocated from the same memory heap that
pars_info_bind_id() would have been using.

pars_info_add_id(): Remove (unused declaration).

This commit fixes a call to the sockstat utility for FreeBSD,
where this utility requires an extra "-s" parameter to display
the connection status and prints one extra column.

This commit fixes a mistake where the --whole-file option
is used by rsync SST in WAN mode instead of LAN.

This commit adds support for reading new SSL configuration
options (ssl-ca, ssl-cert and ssl-key) if the [sst] section
with old options (tca, tcert and tkey) is missing in the config
file, even if not specified authentication mode via the ssl-mode
option. Before this change, new parameters were read only if the
ssl-mode option was present in the configuration file and it was
not equal to the 'DISABLED' value.

Also added diagnostics (information level) which warns the user
that due to the presence of the tca, tcert and/or tkey parameters
in the [sst] section, new SSL configuration options will be ignored
(if their values do not match the old ones).

Observed in 10.4 however same code in 10.2

mariadb-server-10.4/tests/mysql_client_test.c:18209:5: error: this ‘if’ clause does not guard... [-Werror=misleading-indentation]
18209 |     if (!opt_silent)
      |     ^~
In file included from mariadb-server-10.4/tests/mysql_client_test.c:38:
mariadb-server-10.4/tests/mysql_client_fw.c:133:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
  133 |         ((void) ((expr) ? 0 : (die(__FILE__, __LINE__, #expr), 0)))
      |         ^
mariadb-server-10.4/tests/mysql_client_test.c:18212:7: note: in expansion of macro ‘DIE_UNLESS’
18212 |       DIE_UNLESS(tm[i].year == 0);
      |       ^~~~~~~~~~

$ /usr/bin/cc --version
cc (GCC) 11.2.1 20210728 (Red Hat 11.2.1-1)

CMake Warning (dev) at cmake/plugin.cmake:288 (GET_TARGET_PROPERTY):
  Policy CMP0045 is not set: Error on non-existent target...

Also, fix condition argument in ADD_FEATURE_INFO. It is not a string
but boolean

ha_partition stores records in array of m_ordered_rec_buffer and uses
it for prio queue in ordered index scan. When the records are restored
from the array the blob buffers may be already freed or rewritten.

The solution is to take temporary ownership of cached blob buffers via
String::swap(). When the record is restored from m_ordered_rec_buffer
the ownership is returned to table fields.

Cleanups:

init_record_priority_queue(): removed needless !m_ordered_rec_buffer
check as there is same assertion few lines before.

dbug_print_row() for arbitrary row pointer

1. rename option DEPENDENCIES in MYSQL_ADD_PLUGIN() to DEPENDS
   to be consistent with other cmake commands and macros

2. use this DEPENDS option in plugins

3. add dependencies to the plugin embedded target too

4. plugins don't need to add GenError dependency explicitly,
   all plugins depend on it automatically

Server crashes in Field::register_field_in_read_map upon select from
partitioned table with indexed by prefix virtual column.

After several read-mark fixes a problem has surfaced:
Since KEY (c(10),a) uses only a prefix of c, a new field is created,
duplicated from table->field[3], with a new length. However,
vcol_inco->expr is not copied.

Therefore, (*key_info)->key_part[i].field->vcol_info->expr was left NULL
in ha_partition::index_init().

Solution: copy vcol_info from table field when it's set up.

This reverts commit 9b8e207c.

fix main.processlist_notembedded test

* before EXPLAINing `select sleep` wait for select to start
  (fixes "Target is not running an EXPLAINable command")
* after killing sleep, wait for it to die
  (fixes test failures on --repeat when old sleep shows on a test rerun)

* unify with 10.3, copy minor changes from there
  (`--echo End of 5.5` vs `--echo # End of 5.5`, etc)

len was containing garbage, since vctempl->mysql_col_offset was
containing old value while calling row_mysql_store_col_in_innobase_format
from innobase_get_computed_value().

It was not updated after the first ALTER TABLE call, because it's INPLACE
logic considered there's nothing to update, and exited immediately from
ha_innobase::inplace_alter_table().

However, vcol metadata needs an update, since vcols structure is changed
in mysql record.

The regression was introduced by 12614af1. There, refcount==1 condition
was removed, which turned out to be crucial, though racy. The idea was to
update vc_templ after each (sequencing) ALTER TABLE.

We should do the same another way, and there may be a plenty of solutions,
but the simplest one is to add a following condition:
  if vcol structure is changed, drop vc_templ; it will be recreated on next
  ha_innobase::open() call.

in prepare_inplace_alter_table. It is safe, since innodb inplace changes
require at least HA_ALTER_INPLACE_SHARED_LOCK_AFTER_PREPARE, which
guarantee MDL_EXCLUSIVE on this stage.

alter_templ_needs_rebuild() also has to track the columns not indexed, to
keep vc_templ correct.

Note that vc_templ is always kept constructed and available after
ha_innobase::open() call, even on INSERT, though no virtual columns are
evaluated during that statement
inside innodb.

In the test case suplied, it will be recreated on the second ALTER TABLE.

ha_innobase::prepare_inplace_alter_table(): Remove always-true conditions.
Near the start of the function, we would already have returned if
no ALTER TABLE operation flags were set that would require special
action from InnoDB.

It turns out that the conditions were redundant already when they were
introduced in mysql/mysql-server@241387a2b6b61fb8a4f78dc4ad0aaa289400c694
and in commit 068c6197.

Thanks to Nikita Malyavin for noticing this.