Add preliminary support for Ruby 1.8.7
user
```ruby
# This patch is needed to make Rails 2.0.1 run with Ruby 1.8.7.
# http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg528878.html
unless '1.9'.respond_to?(:force_encoding)
  String.class_eval do
    begin
      remove_method :chars
    rescue NameError
      # OK
    end
  end
end
```
assistant