Add function-var to variables_ so LookupRecursive doesn't need to special-case it

test/mjsunit/function-var.js

Index: test/mjsunit/function-var.js
diff --git a/test/mjsunit/compiler/regress-loop-variable-unsigned.js b/test/mjsunit/function-var.js
similarity index 50%
copy from test/mjsunit/compiler/regress-loop-variable-unsigned.js
copy to test/mjsunit/function-var.js
index 751136eb131f53a3dc2daa01eba734eef643f51f..607cbe730eada659b8f00eb73279b9039ae071d8 100644
--- a/test/mjsunit/compiler/regress-loop-variable-unsigned.js
+++ b/test/mjsunit/function-var.js
@@ -2,22 +2,22 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --turbo-loop-variable
-
 (function() {
   function f() {
-    for (var i = 0; i < 4294967295; i += 2) {
-      if (i === 10) break;
+    {
+      function f() { return 42 }
     }
+    function g() { return f }
+    return g;
   }
-  f();
+
+  var g = f();
+  var inner_f = g();
+  assertEquals(42, inner_f());
 })();
 
 (function() {
-  function f() {
-    for (var i = 0; i < 4294967293; i += 2) {
-      if (i === 10) break;
-    }
-  }
-  f();
+  var y = 100;
+  var z = (function y() { return y; });
+  assertEquals(z, z());
 })();