Description:
------------
When resolving trait abstract methods, it seems the class hierarchy is not 
checked, resulting in a fatal error if an abstract method isn't implemented 
directly in the class that is utilising the trait.



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

	trait ATrait
	{
		function bar()
		{
			$this->foo();
		}

		abstract function foo(); 
	}

	class Base
	{
		function foo() { }
	}

	class Child extends Base
	{
		use ATrait;	
	}


Actual result:
--------------
PHP Fatal error:  Cannot make non abstract method Base::foo() abstract in class 
Child in /home/jared/Temp/trait.php on line 21

Fatal error: Cannot make non abstract method Base::foo() abstract in class Child 
in /home/jared/Temp/trait.php on line 21