Allow Zend\Db\Sql\TableIdentifier in Zend\Db\Sql\Insert, Update & Delete

With this patch Zend\Db\Sql\TableIdentifier is allowed in
- `Zend\Db\Sql\Insert::__construct()`
- `Zend\Db\Sql\Insert::into()`
- `Zend\Db\Sql\Update::__construct()`
- `Zend\Db\Sql\Update::table()`
- `Zend\Db\Sql\Delete::__construct()`
- `Zend\Db\Sql\Delete::from()`

Previously it was already accepted by
- `Zend\Db\Sql\Sql::__construct()`
- `Zend\Db\Sql\Select::__construct()`
- `Zend\Db\Sql\Select::from()`

Before, while this code worked:

    $sql = new Sql($tableIdentifier);
    $sql->select();
    ...

These failed:

    $sql = new Sql($tableIdentifier);
    $sql->insert();
    ...
    $sql->update();
    ...
    $sql->delete();
    ...

This patch would be essential to those, who works with multiple schemas simultaneously.