Description:
------------
It would be nice if the parse_ini_file() would return multiple keys with the same name as an array, instead of just overwriting the previous one.

I know there is one previous "bug report" for this request, but I was affraid that just adding a comment to a closed bug might go un-noticed.

Regarding BC, but I guess that can be addressed by a second optional boolean argument.

10x anyway.

Reproduce code:
---------------
[section]
    key1 = value1
    key2 = value2
    key2 = value3


Expected result:
----------------
Array
(
    [section] => Array
        (
            [key1] => "value1"
            [key2] => Array
                (
                    [0] => "value2"
                    [1] => "value3"
                )
        )
)

Actual result:
--------------
Array
(
    [section] => Array
        (
            [key1] => "value1"
            [key2] => "value3"
        )
)