rails/rails — pull request #13605 by alindeman (2014-01-06 03:34:00+00:00)
Title: Requires Autoload to avoid errors when loading just "active_support/core_ext"

Currently:

```
$ irb -Iactivesupport/lib
irb(main):001:0> require 'active_support/core_ext'
NameError: uninitialized constant ActiveSupport::Autoload
```