Integer comparison of INT expressions with different signess in BETWEEN
is not safe. Switching to DECIMAL comparison in case if INT arguments
have different signess.

Don't read from socket in yassl in SSL_pending().
Just return size of the buffered processed data.
This is what OpenSSL is documented to do too:

  SSL_pending() returns the number of bytes which have been processed,
  buffered and are available inside ssl for immediate read.

1. the same message text for INSERT and INSERT IGNORE
2. no new warnings in UPDATE IGNORE yet (big change for 5.5)

and replace a commonly used expression with a
named constant

don't call write_bin_log() when binlog is known
to be disable

tests it with a non-const table too

For some reason check_cxx_compiler_flag() passes result variable name down to
compiler:
https://github.com/Kitware/CMake/blob/master/Modules/CheckCXXSourceCompiles.cmake#L57

But compiler doesn't permit dashes in macro name, like in
-DHAVE_CXX_-fimplicit-templates.

Workarounded by renaming HAVE_CXX_-fimplicit-templates to
HAVE_CXX_IMPLICIT_TEMPLAES.

Debian packages create empty maria/t and maria/r directories,
and MTR cannot run maria.* tests

The patch for MDEV-9521 earlier fixed the problem reported in MDEV-9413.
Only adding tests.

MDEV-9662 Assertion `precision || !scale' failed in my_decimal_precision_to_length_no_truncation(uint, uint8, bool)

The patch for MDEV-9745 earlier fixed the problem reported in MDEV-9662 as well.
Only adding tests.

This is a backport of the patch for MDEV-9653 (fixed earlier in 10.1.13).

The code in Item_func_case::fix_length_and_dec() did not
calculate max_length and decimals properly.

In case of any numeric result (DECIMAL, REAL, INT) a generic method
Item_func_case::agg_num_lengths() was called, which could erroneously result
into a DECIMAL item with max_length==0 and decimals==0, so the constructor of
Field_new_decimals tried to create a field of DECIMAL(0,0) type,
which caused a crash.

Unlike Item_func_case, the code responsible for merging attributes in
Item_func_coalesce::fix_length_and_dec() works fine: it has specific execution
branches for all distinct numeric types and correctly creates a DECIMAL(1,0)
column instead of DECIMAL(0,0) for the same set of arguments.

The fix does the following:
- Moves the attribute merging code from Item_func_coalesce::fix_length_and_dec()
  to a new method Item_func_hybrid_result_type::fix_attributes()
- Removes the wrong code from Item_func_case::fix_length_and_dec()
  and reuses fix_attributes() in both Item_func_coalesce::fix_length_and_dec()
  and Item_func_case::fix_length_and_dec()
- Fixes count_real_length() and count_decimal_length() to get an array
  of Items as an argument, instead of using Item::args directly.
  This is needed for Item_func_case::fix_length_and_dec().
- Moves methods Item_func::count_xxx_length() from "public" to "protected".
- Removes Item_func_case::agg_num_length(), as it's not used any more.
- Additionally removes Item_func_case::agg_str_length(),
  as it also was not used (dead code).

SHOW PROCESSLIST output can be affected by not completed concurrent queries.
Removed this affected SHOW PROCESSLIST since it doesn't seem to affect original
problem.

On SET PASSWORD if the plugin is mysql_native_password
or mysql_old_password, do reset plugin and auth_str
fields.

add a workaround for gold

1. don't exit if setupterm() failed
2. don't use vidattr() if setupterm() failed

MDEV-9707 MAX(timestamp(6) column) in correlated sub-query returns non-existent row data in original table

special treatment for  temporal values in
create_tmp_field_from_item().

old code only did it when result_type() was STRING_RESULT,
but Item_cache_temporal::result_type() is INT_RESULT

don't put command-line arguments into opt_ignore_db_dirs -
it is supposed to contain a malloc()'ed accumulated
list of all ignored dirs

fix typelib to match defines:
#define TC_HEURISTIC_RECOVER_COMMIT   1
#define TC_HEURISTIC_RECOVER_ROLLBACK 2

s/Feber/Februar/

Fixed wait condition in test case to actually wait for get_lock() completion
(not for lock acquisition as it was before). This removes sporadic extra row in
subsequent processlist queries.

Item_func_ifnull::date_op() and Item_func_coalesce::date_op() could
erroneously return 0000-00-00 instead of NULL when get_date()
was called with the TIME_FUZZY_DATES flag, e.g. from LEAST().

5.5 part of the fix

don't allocate all the stack, leave some stack for
function calls.

To test I added the following line:
  alloca_size = available_stack_size() - X
at X=4096 or less mysqld crashed, at 8192 mtr test passed.

remove erroneous free() call

The main.merge test case was failing when tested using row based
binlog format.

While analyzing the issue it was found the following issues:

a) The server is calling binlog related code even when a statement will
   not be binlogged;
b) The child table list was not present into table structure by the time
   to generate the create table statement;
c) The tables in the child table list will not be opened yet when
   generating table create info using row based replication;
d) CREATE TABLE LIKE TEMP_TABLE does not preserve original table storage
   engine when using row based replication;

This patch addressed all above issues.

@ sql/sql_class.h

Added a function to determine if the binary log is disabled to
  the current session. This is related with issue (a) above.

@ sql/sql_table.cc

Added code to skip binary logging related code if the statement
  will not be binlogged. This is related with issue (a) above.

Added code to add the children to the query list of the table that
  will have its CREATE TABLE generated. This is related with issue (b)
  above.

Added code to force the storage engine to be generated into the
  CREATE TABLE. This is related with issue (d) above.

@ storage/myisammrg/ha_myisammrg.cc

Added a test to skip a table getting info about a child table if the
  child table is not opened. This is related to issue (c) above.

The test created a file in location relative to the datadir
(a few levels above datadir).
The file was created by MariaDB server (via INTO OUTFILE), and
later removed by mysqltest (via remove_file). The problem is that
when the vardir is a symlink, MariaDB server and mysqltest can
resolve such paths differently. MariaDB server would return back
to where the symlink is located, while mysqltest would go above
the real directory. For example, if the test is run with --mem,
and /bld/5.5/mysql-test/var points at /dev/shm/var_auto_X, then
SELECT INTO OUTFILE created a file in /bld/5.5/mysql-test , but
remove_file would look for it in /dev/shm/.

The test is re-written so that all paths are resolved in perl,
the logic itself hasn't changed.

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Debian tests are run in 2017, update the test to
use 2027 as a "future".

don't use ipv6 is the check fails for any reason. for example, an
ancient solaris perl didn't have sockaddr_in6() in Socket at all.