Description:
------------
Hi,

I am just working with multi-dimensional file uploads and they are not coming out as expected, i.e. they are not coming out the same as a single file upload. I don't see why this should be - why not just output all file upload in the same way?

Reproduce code:
---------------
I am using a form that has these fields:

<input type="file" name="submission[screenshot]" />
<input type="file" name="other[dem][][img][]" />

I am deliberately using multiple-depths as I am building an automatic form handler that will be able to handle any form.

Expected result:
----------------
'submission' => array
(
	'screenshot' => array
	'name' => 'monster_wallpaper.jpg'
	'type' => 'image/jpeg'
	'tmp_name' => '/tmp/php48lX2Y'
	'error' => 0
	'size' => 223262
),
'other' => array
(
	'dem' => array
		(
			'0' => array
				(
					'img' => array
						(
							'0' => 'mood_wallpaper.png'
							'type' => 'image/png'
							'tmp_name' => '/tmp/phpLotX1Q'
							'error' => 0
							'size' => 27809
						),

				),

		),
)

Actual result:
--------------
array(
    'submission' => array
        (
            'name' => array
                (
                    'screenshot' => 'monster_wallpaper.jpg'
                ),

            'type' => array
                (
                    'screenshot' => 'image/jpeg'
                ),

            'tmp_name' => array
                (
                    'screenshot' => '/tmp/php48lX2Y'
                ),

            'error' => array
                (
                    'screenshot' => 0
                ),

            'size' => array
                (
                    'screenshot' => 223262
                ),

        ),

    'other' => array
        (
            'name' => array
                (
                    'dem' => array
                        (
                            '0' => array
                                (
                                    'img' => array
                                        (
                                            '0' => 'mood_wallpaper.png'
                                        ),

                                ),

                        ),

                ),

            'type' => array
                (
                    'dem' => array
                        (
                            '0' => array
                                (
                                    'img' => array
                                        (
                                            '0' => 'image/png'
                                        ),

                                ),

                        ),

                ),

            'tmp_name' => array
                (
                    'dem' => array
                        (
                            '0' => array
                                (
                                    'img' => array
                                        (
                                            '0' => '/tmp/phpLotX1Q'
                                        ),

                                ),

                        ),

                ),

            'error' => array
                (
                    'dem' => array
                        (
                            '0' => array
                                (
                                    'img' => array
                                        (
                                            '0' => 0
                                        ),

                                ),

                        ),

                ),

            'size' => array
                (
                    'dem' => array
                        (
                            '0' => array
                                (
                                    'img' => array
                                        (
                                            '0' => 27809
                                        ),

                                ),

                        ),

                ),

        ),

);