The mysqld_safe script was using bad grep options.

The line that was fixed was likely meant to be 2 separate grep commands,
piped into each other, with each one removing any lines that matched.

The `-E` option was unneeded, as the command is not using regex.

first SIGTERM and if the process didn't die in 10 seconds, SIGKILL it.

This allows various tools like `rr`, `gcov`, `gprof`, etc to flush
their data to disk properly

MDEV-23149 Server crashes in my_convert / ErrConvString::ptr / Item_char_typecast::check_truncation_with_warn

--log-slow-queries was removed in 10.0. Now opt_slow_logname
can be set either with --slow-query-log-file or with --log-basename


--log was removed in 10.0. Now opt_logname
can be set either with --general-log-file or with --log-basename

- Skip the undo logging only for the newly added partition.

fixes srpm builds on centos7 and other old platforms (with cmake < 3.1)
fixes pre-uninstall script
fixes parallel builds

When creating a recursive CTE, the column types are taken from the
non recursive part of the CTE (this is according to the SQL standard).

This patch adds code to abort the CTE if the calculated values in the
recursive part does not fit in the fields in the created temporary table.

The new code only affects recursive CTE, so it should not cause any notable
problems for old applications.

Other things:
- Fixed that we get correct row numbers for warnings generated with
  WITH RECURSIVE

Reviewer: Alexander Barkov <bar@mariadb.com>

1. Store assignment failures on incompatible data types now raise errors if:
- STRICT_ALL_TABLES or STRICT_TRANS_TABLES sql_mode is used, and
- IGNORE is not used

Otherwise, only a warning is raised and the statement continues.

2. Changing the error/warning test as follows:

-ERROR HY000: Illegal parameter data types inet6 and int for operation 'SET'
+ERROR HY000: Cannot cast 'int' as 'inet6' in assignment of `db`.`t`.`col`

so in case of a big table it's easier to see which column has the problem.
The new error text is also applied to SP variables.

A message used to say "failed to read or decrypt"
but the "or decrypt" part was removed in
commit 0b47c126
without adjusting rarely needed error message suppressions in some
encryption tests.

Let us improve the error message so that it mentions the file name,
and adjust all error message suppressions in tests.

Thanks to Oleksandr Byelkin for noticing one test failure.

Make SEL_ARG::make_root() maintain SEL_ARG::weight.

Also, an unrelated change: fix dbug_print_sel_arg() to correctly
print SQL NULL for the right endpoint.

Disable for embedded as mysqldump cannot connect to embedded server.

The test mariabackup.mdev-14447 is inserting relatively much
data while concurrently backing up the data. The test often fails
on CI systems, possibly due to an inherent race condition between
the producer (server) and consumer (backup) that would be solved
if the backup was being produced by the server (MDEV-14992).

The written data volume was increased somewhat by
commit 4179f93d (MDEV-18976).
Let us trim the log volume by not writing PAGE_CHECKSUM records
or row-level undo log records, and make the test cover what was
intended to cover by creating the table in the system tablespace.

Part #2: make sure we allocate space for two JOIN_TABs that
use temporary tables.
The dbug_join_tab_array_size is still set to catch cases where
we try to access more JOIN_TAB object than we thought we would have.