title: SubSonic isn't generating MySql foreign key tables
body: <p>I two tables within a MySql 5.1.34 database. When using SubSonic to generate the DAL, the foreign-key relationship doesn't get scripted, ie; I have no Parent.ChildCollection object. Looking inside the generated DAL Parent class shows the following;</p>
  
  <pre><code>//no foreign key tables defined (0)
  </code></pre>
  
  <p>I have tried SubSonic 2.1 and 2.2, and various MySql 5 versions. I must be doing something wrong procedurally - any help would be greatly appreciated. This has always just worked 'out-the-box' when using MS-SQL. </p>
  
  <pre><code>TABLE `parent` (
    `ParentId` INT(11) NOT NULL AUTO_INCREMENT,
    `SomeData` VARCHAR(25) DEFAULT NULL,
    PRIMARY KEY (`ParentId`)
  ) ENGINE=INNODB DEFAULT CHARSET=latin1;
  
  TABLE `child` (
    `ChildId` INT(11) NOT NULL AUTO_INCREMENT,
    `ParentId` INT(11) NOT NULL,
    `SomeData` VARCHAR(25) DEFAULT NULL,
    PRIMARY KEY (`ChildId`),
    KEY `FK_child` (`ParentId`),
    CONSTRAINT `FK_child` FOREIGN KEY (`ParentId`) REFERENCES `parent` (`ParentId`)
  ) ENGINE=INNODB DEFAULT CHARSET=latin1;
  </code></pre>