The only universal index in InnoDB was the change buffer.
It suffices to keep the DICT_IBUF flag (which, like DICT_UNIVERSAL,
is not written to any persistent data structure).

The function check_mdl_lock_works() is for debug builds only.

Define some page accessor functions inline in page0page.h,
reducing code duplication in page0page.ic.

Use page_rec_is_leaf() instead of page_is_leaf() where possible.

At least the Debian package reads configuration from there.

Fixes Galera rsync sst on FreeBSD

MDEV-13751 Interrupted SELECT fails with 1030: 'Got error 1 "Operation not permitted" from storage engine MyISAM'

quick select returns 1, not proper HA_ERR_xxx error code,
so don't send it to handler::print_error().

avoid CRYPTO_free recursively calling itself on Windows

InnoDB was too eager to forget the open table (m_mysql_table=NULL)
and that caused it to try to open a table which was opened by the user
not FK-prelocked. The server didn't expect that.

After fixing this, it crashed in gcol.innodb_virtual_fk test, trying to
compute virtual columns for a table that didn't have them. Because
row_upd_store_row() was deleting a row from node->table, while computing
virtual columns in thr->prebuilt->m_mysql_table. Which wasn't necessarily
the same table, and might've not even had virtual columns, even if
node->table did.

When printing an expression, like a/(b*c), we need to print parentheses,
even though / and * have the same precedence. Basically, we should
always treat the second argument as having one level higher precedence
than it normally is.

MDEV-13623 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed in virtual longlong Field_long::val_int

multi-update first runs a select to find affected rows, then performs
a separate update step. On the second step WITH CHECK OPTION rows
are read with rnd_read, but the first step might've been done with
keyread.

keyread over indexed virtual columns only reads the column's value, not
dependent base columns. This is reflected in the read_set too.  But on
the rnd_read step base columns must be read - thus we need to update the
read_set before doing updates.

SQL Standard (4.23.3.4 Table check constraints, part 2, SQL:2016) says
that CHECK constraint rejects rows *only* if the condition is FALSE.
That is, both TRUE and NULL should be allowed.

Same as MDEV-12725 but for federated (not X).
Set and reset mysql.net->thd appropriately.

The $result variable was supposed to accumulate failures from
all mysqltest processes (that analyzed all error logs in parallel).
But it was mistakenly put in the loop, so it was reset for each process.

When slow innodb shutdown is requested, thd_destructor_proxy waits
for all transactions to end, for trx_sys_any_active_transactions() == 0,
and then signals purge threads to exit.

But purge threads own THDs, and these THDs may own transactions too.
On shutdown they'll be idle (TRX_STATE_NOT_STARTED), though, so
let's skip idle transactions in trx_sys_any_active_transactions().

Item_func_format::print() was redundant
and other changes

thread_id is uint64 in 10.2

it contradicted the manual and was inconsistent

Use OpenSSL 1.1 when applicable.
Create compatibility macros for OpenSSL 1.0- and YaSSL.

mariadb-client-core-10.2, mariadb-client-10.2, and
mariadb-server-core-10.2 should not depend on libmariadb3 - they
do not have any binaries dynamically linked with libmariadb3.so

The symlink

/usr/lib/libmysqlclient.so -> /usr/lib/libmysqlclient.so.18

was invalid, because the library was not in /usr/lib.
The correct symlink is

/usr/lib/x86_64-linux-gnu/libmysqlclient.so -> /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18

put libmariadbclient18 symlinks into libmariadbclient18.deb package,
not into libmariadb3.deb, because installing/reinstalling
libmariadbclient18.deb must recreate these symlinks.

post-fix for 04b288ae

Ported fix from mysql-wsrep-bugs with some refactoring.

Test case is MW-402 where MariaDB needs record as there is
extra connection <con_name> lines.

Optimizing cascade node list traversal, which could turn out as
performance bottleneck
Even this current cascade node check could be skipped, but a dedicated
mtr test is needed to confirm that

Use wsrep_must_process_fk function to check if foreign key
constraint needs to be processed in case of Galera is enabled.

Optimizing cascade node list traversal, which could turn out as
performance bottleneck
Even this current cascade node check could be skipped, but a dedicated
mtr test is needed to confirm that

* created tests focusing in multi-master conflicts during cascading foreign key
  processing
* in row0upd.cc, calling wsrep_row_ups_check_foreign_constraints only when
  running in cluster
* in row0ins.cc fixed regression from MW-369, which caused crash with MW-402.test

The purpose of the test is to ensure that redo log apply will
extend data files before applying page-level redo log records.
The test intermittently failed, because the doublewrite buffer
would sometimes contain data for the pages that the test
truncated. When the test truncates data files, it must also remove
the doublewrite buffer entries, because under normal operation, the
doublewrite buffer would only be written to if the data file already
has been extended.

MySQL 5.7 introduced some optimizations to avoid file I/O during
ALGORITHM=INPLACE operations. While both innodb-index-online and
innodb-table-online will exercise both the merge sort files and
the online log files in 10.1, in 10.2 they would only exercise the
online log files.

Modify one test case in innodb.innodb-table-online so that
skip_pk_sort will not hold. In this way, this test case will
write and read the merge sort files. The other instrumented tests
in innodb-index-online and innodb-table-online will only write
and read online_log files.

This should also fix the MariaDB 10.2.2 bug
MDEV-13826 CREATE FULLTEXT INDEX on encrypted table fails.

MDEV-12634 FIXME: Modify innodb-index-online, innodb-table-online
so that they will write and read merge sort files. InnoDB 5.7
introduced some optimizations to avoid using the files for small tables.

Many collation test results have been adjusted for MDEV-10191.