Description:
------------
Use case: I need to read the @var annotation and fix it using the use statements from that file. For that I need to know the file where the property was declared which could be normally found out from ReflectionClass::getFile.

However ReflectionProperty::getDeclaringClass doesn't return the trait where the property was actually declared but only the class that uses the trait. ReflectionMethod::getDeclaringClass suffers from this bug as well.

More information and a workaround can be found in this article.
http://mouf-php.com/blog/php_reflection_api_traits

Test script:
---------------
<?php

trait Foo
{
    public $foo;
    public function foo() {}
}

class Bar
{
    use Foo;
}

$r = new ReflectionProperty('Bar', 'foo');
echo $r->getDeclaringClass()->getName();

echo "\n";

$r = new ReflectionMethod('Bar', 'foo');
echo $r->getDeclaringClass()->getName();

Expected result:
----------------
Foo
Foo

Actual result:
--------------
Bar
Bar