N°2651 rollback gitignore for lib tests dirs

Too dangerous ! We'll work properly on this but for 2.8

lib/symfony/debug/Tests/Fixtures/FinalMethod.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace Symfony\Component\Debug\Tests\Fixtures;
+
+class FinalMethod
+{
+    /**
+     * @final since version 3.3.
+     */
+    public function finalMethod()
+    {
+    }
+
+    /**
+     * @final
+     *
+     * @return int
+     */
+    public function finalMethod2()
+    {
+    }
+
+    public function anotherMethod()
+    {
+    }
+}