Description:
------------
The first argument passed to __callStatic() - the method name - is always converted lowercase. In case of __call() the method name is supplied as-is.

Reproduce code:
---------------
<?php
class MyInstance
{
    public function __call($method, $params)
    {
        echo $method . "\n";
    }
}

class MyStatic
{
    public static function __callStatic($method, $params)
    {
        echo $method . "\n";
    }
}

$instance = new MyInstance();
$instance->fooBar(); // fooBar
MyStatic::fooBar();  // foobar


Expected result:
----------------
fooBar
fooBar

Actual result:
--------------
fooBar
foobar