Add SchemaDumper support table_options for MySQL.

related #12172 

Is often used to specify table_options in MySQL. 

(For example, `"ENGINE=MyISAM"` for full-text search, `"ENGINE=InnoDB ROW_FORMAT=DYNAMIC"` or `"ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=8"` for use InnoDB of Barracuda File Format.)

SchemaDumper should support a dump of table_options.
Hmm I see. If there is no collation then we try to reconstruct the default. This will be brittle when MySQL charsets or database-specific defaults change, though. Is there are better way to detect this information?