make apc class loader testable against apcu without apc bc layer

Author: Tobion

src/Symfony/Component/ClassLoader/Tests/ApcClassLoaderTest.php

@@ -14,15 +14,12 @@
 use Symfony\Component\ClassLoader\ApcClassLoader;
 use Symfony\Component\ClassLoader\ClassLoader;
 
-/**
- * @requires extension apc
- */
 class ApcClassLoaderTest extends \PHPUnit_Framework_TestCase
 {
     protected function setUp()
     {
         if (!(ini_get('apc.enabled') && ini_get('apc.enable_cli'))) {
-            $this->markTestSkipped('The apc extension is available, but not enabled.');
+            $this->markTestSkipped('The apc extension is not enabled.');
         } else {
             apcu_clear_cache();
         }