Case sensitive columnName's don't work anymore

Since the Schema refactoring, misc case column names do not work again.

<?php

/**
 * @Entity @Table(name="user")
 */
class User
{ 
    /** @Id @Column(name="userId", type="integer") @GeneratedValue(strategy="AUTO")  */
    public $id;
    
    /** @Column(name="name", type="string")  */
    public $name;
}

This crashes the SchemaTool when creating the database schema:

SchemaTool: exception 'Doctrine\DBAL\Schema\SchemaException' with message 'An unknown column-name userId was given.' in .../doctrine/lib/Doctrine/DBAL/Schema/SchemaException.php:60

This may be because of several strtolower calls, e.g. in Doctrine\DBAL\Schema\Table ("$columnName = strtolower($columnName);")