Description:
------------
The debug_backtrace() call doesn't show what arguments where passed to a function in PHP 5.0b4 bug does with PHP 4.3.4 using the same source file.

Reproduce code:
---------------
<?
function test($a, $b)
{
        print_r(debug_backtrace());
        echo "$a, $b\n";
}


test("Hello", "World");
?>


Expected result:
----------------
PHP 4.3.4 (cli) (built: Jan  5 2004 17:27:17)
Copyright (c) 1997-2003 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2003 Zend Technologies
Array
(
    [0] => Array
        (
            [file] => /root/scratch/xml/foo.php
            [line] => 9
            [function] => test
            [args] => Array
                (
                    [0] => Hello
                    [1] => World
                )

        )

)
Hello, World


Actual result:
--------------
PHP 5.0.0b4 (cli) (built: Feb 22 2004 21:45:34)
Copyright (c) 1997-2004 The PHP Group
Zend Engine v2.0.0-dev, Copyright (c) 1998-2004 Zend Technologies
Array
(
    [0] => Array
        (
            [file] => /root/scratch/xml/foo.php
            [line] => 9
            [function] => test
        )

)
Hello, World