Description:
------------
When using parsekit_compile_file from a file that contains an equally named 
function as the file it is parsing, it will include an error:
"Cannot redeclare example() (previously declared in lint.php:2)"

Parsekit should ignore the scope of the host file.

Test script:
---------------
<?php
$errors = array();
$oparray = parsekit_compile_file($_SERVER['PHP_SELF'], $errors, PARSEKIT_SIMPLE);

var_dump($oparray, $errors);

function example() {}


Expected result:
----------------
It should encounter 0 errors.

Actual result:
--------------
It encounters an error for every function in the compiled file that has the same 
name as the file parsekit_compile_file is called from.

It doesn't have to be the same file (though that's the easiest way to test it).


Cannot redeclare example() (previously declared in /tmp/pecl-php-
parsekit/examples/compile_file.php:8)