N°2651 rollback gitignore for lib tests dirs

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

lib/nikic/php-parser/test/code/parser/expr/fetchAndCall/constFetch.test

@@ -0,0 +1,33 @@
+Constant fetches
+-----
+<?php
+
+A;
+A::B;
+A::class;
+-----
+array(
+    0: Expr_ConstFetch(
+        name: Name(
+            parts: array(
+                0: A
+            )
+        )
+    )
+    1: Expr_ClassConstFetch(
+        class: Name(
+            parts: array(
+                0: A
+            )
+        )
+        name: B
+    )
+    2: Expr_ClassConstFetch(
+        class: Name(
+            parts: array(
+                0: A
+            )
+        )
+        name: class
+    )
+)