Description:
------------
ReflectionEnum::isInstantiable returns true (should return false)
ReflectionEnum::isCloneable throws exception (should return false)

Probably other issues, but ran into these first, which are obviously wrong. All methods in ReflectionEnum inherited from ReflectionClass should return reasonable values for an enum.

Test script:
---------------
Status.php:
enum Status
{
    case Draft;
    case Published;
    case Archived;
}

Test script:

include 'yourautoloader.php';

$reflectionClass = new \ReflectionEnum('\Status');
echo $reflectionClass->isInstantiable();
echo "\n";
echo $reflectionClass->isCloneable();


Expected result:
----------------
0
0

Actual result:
--------------
1

Fatal error: Uncaught Error: Cannot instantiate enum Status ....