Alterações na distribuição 3.23.21

Added mysql_character_set_name() function to the MariaDB C API.

• Made the update log ASCII 0 safe.
• Added the mysql_config script.
• Fixed problem when using < or > with a char column that was only partly indexed.
• One would get a core dump if the log file was not readable by the MariaDB user.
• Changed mysqladmin to use CREATE DATABASE and DROP DATABASE statements instead of the old deprecated API calls.
• Fixed chown warning in safe_mysqld.
• Fixed a bug in ORDER BY that was introduced in 3.23.19.
• Only optimise the DELETE FROM tbl_name to do a drop+create of the table if we are in AUTOCOMMIT mode (needed for BDB tables).
• Added extra checks to avoid index corruption when the ISAM/MyISAM index files get full during an INSERT/UPDATE.
• myisamchk didn't correctly update row checksum when used with -ro (this only gave a warning in subsequent runs).
• Fixed bug in REPAIR TABLE so that it works with tables without indexes.
• Fixed buffer overrun in DROP DATABASE.
• LOAD TABLE FROM MASTER is sufficiently bug-free to announce it as a feature.
• MATCH and AGAINST are now reserved words.

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