Improve execution of parameterized SQL statements with arrays of parameters by sendin...

Improve execution of parameterized SQL statements with arrays of parameters by sending chunks of SQL statements.
If SQL_ATTR_CURSOR_TYPE of an statement is SQL_CURSOR_FORWARD_ONLY, SQL_ATTR_CONCURRENCY is SQL_CONCUR_READ_ONLY and extended protocol isn't used, the batch execution of the statement is possible.
A new option Batch Size was introduced for such cases.
 Batch Size: Split an array (of parameters) into chunks of Batch Size to execute statements. The last chunk may contain less than Batch Size elements. Setting 1 to this option forces the current one by one execution.

Also turn off use_server_side_prepare option temporarily when batch executuion is possible.