Autowire connections by argument type and name

[HypeMC]

Similar to #1259 this will allow autowiring connections by argument type and name which is useful when you don't want to use the ORM and have multiple DBAL connections:

use Doctrine\DBAL\Connection;

class Foo
{
    public function __construct(Connection $myNameConnection) {}
}

The last PR was a little controversial but I'd still like to hear peoples thoughts on this one.

[nicolas-grekas]

Sweet :)
Failures are unrelated.