Rename directory for back-end tests

compiler/testData/codegen/box/functions/tailRecursion/labeledThisReferences.kt

@@ -0,0 +1,25 @@
+class B {
+    inner class C {
+        tailRecursive fun h(counter : Int, x : Any) {
+            if (counter > 0) {
+                this@C.h(counter - 1, "tail")
+            }
+        }
+
+        tailRecursive fun h2(x : Any) {
+            this@B.h2("no recursion") // keep vigilance
+        }
+
+    }
+
+    fun makeC() : C = C()
+
+    fun h2(x : Any) {
+    }
+}
+
+fun box() : String {
+    B().makeC().h(1000000, "test")
+    B().makeC().h2(0)
+    return "OK"
+}