Description:
------------
For stdClass objects, ReflectionProperty::isStatic() returns true for all properties.

Code has two examples, the first one showing the bug, the second one showing the expected result.

Reproduce code:
---------------
<?php
// Creating Obj with "new" doesn't affect this bug
/* $Obj = new stdClass; */
$Obj->value = 'value';
$RefObj = new ReflectionObject($Obj);
foreach ($RefObj->getProperties() as $Property) {
  var_dump($Property->isStatic()); // prints "bool(true)"
}

// Reflection works for this class
class myClass extends stdClass {
}

$MyObj = new myClass;
$MyObj->value = 'value';
$RefObj = new ReflectionObject($MyObj);
foreach ($RefObj->getProperties() as $Property) {
  var_dump($Property->isStatic()); // prints "bool(false)"
}
?>

Expected result:
----------------
both var_dump's should print "bool(false)"

Actual result:
--------------
stdClass::$value is said to be static