bytes are possibly lost

Restored suppressions removed by MDEV-9994: they're needed for detached threads.

             bytes are possibly lost

Timer thread of threadpool is created "joinable", but they're not "joined" on
completion. This causes memory leaks around thread local storage.

Fixed by joining timer thread.

`--help` is a perfectly valid parameter and both `mysqladmin` and
`mysql_waitpid` should exit with success (zero errror code).
Signed-off-by: Vicențiu Ciorbaru <vicentiu@mariadb.org>

Make mysql_waitpid return exit code 0 when -V flag is supplied.

The combination of --remove_file and --write_file on .expect file creates
a race condition which can be hit by MTR which reads the file in a loop.
Instead, .expect file should be changed with --append_file.
It was fixed in 10.x, but in 5.5 the sporadic failure still affected buildbot.
Fixed 3 test files which use the problematic combination

Aria service threads are created "joinable", but they're not "joined" on
completion. This causes memory leaks around thread local storage.

Fixed by joining service thread. Simplified relevant code and cleaned up
relevant valgrind suppressions.

Fix test whether process is alive in mysqltest.

Also fix SHUT_RD definition on Windows to be SD_RECEIVE.
SD_BOTH  was used instead prior to this patch, and this would
occasionally make mysql_shutdown()  fail - when the socket for the current connection
is not able send the COM_SHUTDOWN response anymore.

The check inserts a DWARF directive to tell stack unwinding that the
bottom of the (co-routine) stack has been reached. Without this, stack
traces may attempt to continue past the bottom of the stack.

The GCC version check was incorrect, and failed to trigger for GCC
version 5.[0123].

Use direct persistent index corruption set on InnoDB dictionary
for this test. Do not allow creating new indexes if one of the
existing indexes is already marked as corrupted.

This appears to break some installation, and it did not do anything
useful anyway.

Fixed memory leaks in gen_lex_hash.

take into account that agg_arg_charsets_for_comparison()
can replace Item_field's with Item_func_conv_charset

restore the error message that was removed by mistake in ec38c1bb

Backport a part of

commit 439f75f8
Author: Kristian Nielsen <knielsen@knielsen-hq.org>
Date:   Mon Jun 30 13:59:21 2014 +0200

    Fix test failures in rpl.rpl_checksum and rpl.rpl_gtid_errorlog.

Fixed wait condition to wait for InnoDB to actually acquire row locks instead
of waiting for thread to enter "Searching rows for update" state (which happens
earlier).

Also use default wait timeout, 2 seconds can be too few for threads to enter
appropriate state.

results in ERROR 1046 (3D000) at line 13: No database selected.

Use database from create table to foreign key database if
nothing else is given.

Added proper waiting for thread to enter required state. Also reduced amount of
information dumped from processlist.

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