Removed superfluous 'tracks' directory at the root of the repository.

Testing commits to github.

vendor/rails/actionpack/test/testing_sandbox.rb

@@ -0,0 +1,11 @@
+module TestingSandbox
+  # Temporarily replaces KCODE for the block
+  def with_kcode(kcode)
+    old_kcode, $KCODE = $KCODE, kcode
+    begin
+      yield
+    ensure
+      $KCODE = old_kcode
+    end
+  end
+end