Session handling adodblite

1. Add additional table manually to the DB:

CREATE TABLE oxsessions (

    ID INT NOT NULL AUTO_INCREMENT, 
    SessionID VARCHAR(64), 
    session_data MEDIUMTEXT DEFAULT , 
    expiry INT(11),
    expireref VARCHAR(64) DEFAULT ,
    PRIMARY KEY (ID),
    INDEX SessionID (SessionID),
    INDEX expiry (expiry)

);

2. In config.inc.php check additional config constant:

$this->blAdodbSessionHandler = true;

Notice. By default session_data should be text, but there were cases when session data exceed this limit.