fixed class name
removed PHP 5.2 cruft
prefer standalone installations if possible, or else it gets annoying to test and installed-as-dependency core
use the local phpunit installation to not require global PEAR installations anymore
use containeraware to avoid prolbems with circular dependencies

Whenever you encouter a circular dependency, you'd have to overwrite the
closure that generates one of the objects with the created object. This is
however not possible, as PHP does not let you overwrite an active Closure with
something other.
fixed failing tests due to the switch to Sf\Yaml
removed unused config file