Allow injection of container and current definition instance as factory parameters

[quimcalpe]

This PR supersedes #333 and #269. Actually, It's done on top of #333 to preserve commits.

You can get now the container and current definition injected into factory closures type-hinted like this:

factory(function(ContainerInterface $c, Definition $d) {
    return new Thing($c->get($d->getName()));
});

You can mix also any dependency the container can resolve, parameter order is irrelevant with type-hinting:

factory(function(ContainerInterface $c, Service $s, Definition $d) {
    return new Thing($s, $d->getName(), $c->get("whatever"));
});

This is also backwards compatible, so if you don't type hint the first parameter, an instance of the ContainerInterface will be injected, if you don't type hint the second parameter, an instance of the current Definition will be also injected, although that's not recommended anyway.

factory(function($c, $d) {
    $c; // => container instance
    $d->getName(); // => requested name, without wildcards
    ....
});

Todo:

• test case for FactoryParameterResolver
• update change-log.md

[mnapoli]

I finally got to dive into this! This is a very good addition thanks, I only had a few changes to make. Could you review #347 if you have time? The changes I did are detailed in the PR.