Description:
------------
If a child class directly references a property defined in
the parent class, it no longer inherits it.

Reproduce code:
---------------
<?php
class base { public $x = 1; }
class foo extends base { }
class bar extends base
{
    public function bartest()
    {
        var_dump($this->x);
    }
}
$base = new base;
print_r($base);
$foo = new foo;
print_r($foo);
$bar = new bar;
print_r($bar);
$bar->bartest();
?>

Expected result:
----------------
base Object
(
    [x] => 1
)
foo Object
(
    [x] => 1
)
bar Object
(
    [x] => 1
)
int(1)

Actual result:
--------------
base Object
(
    [x] => 1
)
foo Object
(
    [x] => 1
)
bar Object
(
)

Notice: Undefined property:  bar::$x in /path/bug.php on line 12
NULL