Make the annotation driver to work with phars under Windows

[gremo]

The current implementation of AnnotationDriver doesn't work in Windows when the application runs inside a phar.

The RecursiveDirectoryIterator at line 221 will search in subdirectories of $path, but under Windows entities and repositories get a backslash after the path:

phar://path/to/phar/src/AppBundle\MyEntity.php

Because of the check at line 247 the entity is simply ignored (ReflectionClass always returns forward slashes because source file is inside the phar itself)

phar://path/to/phar/src/AppBundle/MyEntity.php

I think it will be enough a replace when iterating file files (the same is done at line 228):

foreach ($iterator as $file) {
    $sourceFile = str_replace('\\', '/', $file[0]);

    // ...
}

[gremo]

Anyone interested in this?