fixes for Symfony autoload issue and undefined variable issue

9ab7becb380e58a929089e3898e8ef7f52d2006b When trying out the latest version of phpdcd I had Symfony autoloader issues:
PHPDCD/Autoload.php uses explicit includes of symfony classes, without the symfony autoloader loaded at that point, which caused include dependency hell. Just loading Symfony/Component/Finder/autoloader.php fixed the issue for me

34757babcc1d58edf8fd0061e858c2261aa7e859  other issue: I got "Undefined variable: commonPath" notices