Description:
------------
If include_path is set to ".", and the relative path in an include statement contains "../" but doesn't start with "../", then the relative path is relative to the including script instead of the currently running script. This is inconsistent with the way in which relative paths in include statements are supposed to work.

Reproduce code:
---------------
/a.php
<?
include "inc/module/b.php";
?>

/inc/module/b.php
<?
include "spoon/../../c.php"; // Note: There is no "spoon" catalog
?>

/inc/c.php
<?
echo "Hello world";
?>


Expected result:
----------------
"Warning: main(foo/../../c.php): failed to open stream: No such file or directory in /inc/module/b.php on line 1"

The above result would be consistent with the error reported when "foo/../" is removed from the code.

Actual result:
--------------
Outputs "Hello world" to the browser.