The "bindParam" method of OCI8Statement is not using the "length" parameter

I've fixed the ```OCI8Statement::bindParam``` method in order to pass the "length" parameter when the type is not a LOB

https://github.com/doctrine/dbal/blob/master/lib/Doctrine/DBAL/Driver/OCI8/OCI8Statement.php#L112

As noted on the description of the function on the PHP manual (for the IN binds), this is leading to a truncation of the values to the size of the PHP variable.

http://www.php.net/manual/en/function.oci-bind-by-name.php