* remove redundant casts
* fix fix_win_paths() not to pretend that it takes const char* string
  because it changes it. Fix its callers not to pass const strings
  into it.
* use _WIN32 not __WIN__

increase stack size for labrador

        Added IS_GENERATED and GENERATION_EXPRESSION columns required by
        the SQL standard

The function st_select_lex_unit::exec_recursive() incorrectly determined
that a CTE mutually recursive with some others was stabilized in the case
when the non-recursive part of the CTE returned an empty set. As a result
the server fell into an infinite loop when executing a query using
this CTE.

Do not truncate pointers returned by _findfirst to int.

Mutually recursive CTE could cause a crash of the server in the case
when they were not Standard compliant. The crash happened in
mysql_derived_prepare(), because the destructor the derived_result
object created for a CTE that was mutually recursive with some others
was called twice. Yet this destructor should not be called for resursive
references.

The method With_element::check_unrestricted_recursive() icorrectly performed
the check that no recursive reference is not encountered in inner parts of
outer joins. As a result the server reported errors for valid specifications
with outer joins.

This could fix a race condition between mysqld and perl on Windows.

The test was unnecessarily depending on InnoDB purge, which can
sometimes fail to proceed.

Let us rewrite the test to use BEGIN;INSERT;ROLLBACK to cause the
immediate removal of the desired records.

MDEV-12328, added building of AWS for release builds

instance connects to server.

        New thread kill status added KILL_SLAVE_SAME_ID, and the related
        error message.

On some weird reason, Visual C++ does not like newly introduced
#define ut_ad(EXPR)	DBUG_ASSERT(EXPR)

and writes bogus "not enough parameters for DBUG_ASSERT" warning.

Workaround it with
#define ut_ad DBUG_ASSERT

JSON_REMOVE.

        null_value wasn't properly set in Item_json_func_remove::val_str.

After a partial rollback, an undo log segment that is empty
may carry a duplicate-looking top_undo_no.

Adjust the debug assertions and add a test.

When "simulate_failed_connection_1"  DBUG keyword is set, current thread's
DBUG stack points to global variable in dbug (init_settings).
This global variable could be overriden while current THD is still active,
producing crash in worst scenario.

Added DBUG_SET()so that the current thread own dbug
context that cannot concurrently modified by anyone else.

Follow-up to
Bug#21141390: REMOVE UNUSED FUNCTIONS AND CONVERT GLOBAL SYMBOLS TO STATIC
but for variables instead of functions.

Was identified with the -Wmissing-variable-declarations
compiler warning option supported by Clang 3.6.
Reviewed-by: Marko Mäkelä <marko.makela@oracle.com>

RB: 9070

InnoDB defines some functions that are not called at all.
Other functions are called, but only from the same compilation unit.

Remove some function declarations and definitions, and add 'static'
keywords. Some symbols must be kept for separately compiled tools,
such as innochecksum.

Also, remove empty .ic files that were not removed by my MySQL commit.

Problem:
InnoDB used to support a compilation mode that allowed to choose
whether the function definitions in .ic files are to be inlined or not.
This stopped making sense when InnoDB moved to C++ in MySQL 5.6
(and ha_innodb.cc started to #include .ic files), and more so in
MySQL 5.7 when inline methods and functions were introduced
in .h files.

Solution:
Remove all references to UNIV_NONINL and UNIV_MUST_NOT_INLINE from
all files, assuming that the symbols are never defined.
Remove the files fut0fut.cc and ut0byte.cc which only mattered when
UNIV_NONINL was defined.

until the protocol changes for bulk are finalized.

This is a partial port of my patch in MySQL 8.0.
In MySQL 8.0, all InnoDB references to DBUG_OFF were replaced
with UNIV_DEBUG. We will not do that in MariaDB.

InnoDB used two independent compile-time flags that distinguish
debug and non-debug builds, which is confusing.

Also, make ut_ad() and alias of DBUG_ASSERT().

In the InnoDB internal SQL parser, there is the keyword
DOES_NOT_FIT_IN_MEMORY that is never specified in any CREATE TABLE
statement that is passed to the InnoDB SQL parser
(que_eval_sql() or pars_sql() or yyparse()). If this keyword were
ever present, it would set the flag dict_table_t::does_not_fit_in_memory
which is only present in debug builds.

Let us remove all traces of this.

Also, fix storage/innobase/pars/make_flex.sh so that no the generated
file storage/innobase/pars/lexyy.cc works as is.

FIXME: Always generate the InnoDB Bison files at build time, similar
to how sql/sql_yacc.yy is handled. (This would still leave the
generated scanner files, unless we want to add a build-time dependency
for Flex.)

The fix is about filling the space beyond the end of VARCHAR values with zeroes.
VARCHAR NULLs already has its buffer filled with zeros. So when the VARCHAR fields
are not NULL, then we explicitly fill the buffer with zeros.

Added conditions so that the WITH queries are also added to the query cache

fix proposed by Diego

dict_create_or_check_foreign_constraint_tables(): Change the warning
about the foreign key metadata table creation to a note.

Remove messages after metadata table creation. If the creation fails,
startup will abort with a message. Normally the creation succeeds on
bootstrap, and the messages would only be noise.

Remove the related suppressions from the tests.

        Now let's check JSON length to fit the max_allowed packet.

        In get_mm_tree we have to change Field_geom::geom_type to
        GEOMETRY as we have to let storing all types of the spatial features
        in the field. So now we restore the original geom_type as it's
        done.

character (").

        The my_wildcmp function doesn't expect the string parameter to
        have escapements, only the template. So the string
        should be unescaped if necessary.

row_purge_remove_sec_if_poss_leaf(): Add a debug assertion.

row_purge_parse_undo_rec(): Add a debug assertion that the table cannot
be a temporary table. Remove a dead condition.

- add PAGESIZE property to the MSI installer
- add combobox  to the MSI UI to select innodb page size
- add new parameter --innodb_page_size for mysql_install_db.exe.
this is passed down to bootstrap and also stored in my.ini.

MSI will call mysql_install_db.exe with --innodb_page_size set to the
PAGESIZE property

fixed C++ comment in C code

Starting with MySQL 5.7, temporary tables in InnoDB are handled
differently from persistent tables. Because temporary tables are
private to a connection, concurrency control and multi-versioning
(MVCC) are not applicable. For performance reasons, purge is
disabled as well. Rollback is supported for temporary tables;
that is why we have the temporary undo logs in the first place.

Because MVCC and purge are disabled for temporary tables, we should
discard all temporary undo logs already at transaction commit,
just like we discard the persistent insert_undo logs. Before this
change, update_undo logs were being preserved.

trx_temp_undo_t: A wrapper for temporary undo logs, comprising
a rollback segment and a single temporary undo log.

trx_rsegs_t::m_noredo: Use trx_temp_undo_t.
(Instead of insert_undo, update_undo, there will be a single undo.)

trx_is_noredo_rseg_updated(), trx_is_rseg_assigned(): Remove.

trx_undo_add_page(): Remove the parameter undo_ptr.
Acquire and release the rollback segment mutex inside the function.

trx_undo_free_last_page(): Remove the parameter trx.

trx_undo_truncate_end(): Remove the parameter trx, and add the
parameter is_temp. Clean up the code a bit.

trx_undo_assign_undo(): Split the parameter undo_ptr into rseg, undo.

trx_undo_commit_cleanup(): Renamed from trx_undo_insert_cleanup().
Replace the parameter undo_ptr with undo.
This will discard the temporary undo or insert_undo log at
commit/rollback.

trx_purge_add_update_undo_to_history(), trx_undo_update_cleanup():
Remove 3 parameters. Always operate on the persistent update_undo.

trx_serialise(): Renamed from trx_serialisation_number_get().

trx_write_serialisation_history(): Simplify the code flow.
If there are no persistent changes, do not update MONITOR_TRX_COMMIT_UNDO.

trx_commit_in_memory(): Simplify the logic, and add assertions.

trx_undo_page_report_modify(): Keep a direct reference to the
persistent update_undo log.

trx_undo_report_row_operation(): Simplify some code.
Always assign TRX_UNDO_INSERT for temporary undo logs.

trx_prepare_low(): Keep only one parameter. Prepare all 3 undo logs.

trx_roll_try_truncate(): Remove the parameter undo_ptr.
Try to truncate all 3 undo logs of the transaction.

trx_roll_pop_top_rec_of_trx_low(): Remove.

trx_roll_pop_top_rec_of_trx(): Remove the redundant parameter
trx->roll_limit. Clear roll_limit when exhausting the undo logs.
Consider all 3 undo logs at once, prioritizing the persistent
undo logs.

row_undo(): Minor cleanup. Let trx_roll_pop_top_rec_of_trx()
reset the trx->roll_limit.