func MySQLNewConnection(sock string, user string, password string, database string) (Connection, os.Error) {
var err os.Error
var db *mysql.Client
db, err = mysql.DialUnix(sock, user, password, database)
if err != nil {
err = db.Close()
return nil, err
}
conn := new(MySQL)
conn.Database = database
conn.db = db
return conn, err
}