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.
Default collation may be set on the server and the database, too, though: http://dev.mysql.com/doc/refman/5.7/en/charset-applications.html

Rather than inferring the collation based on the likely default, do we have a way to check the actual collation of the table?