Bahuvrihi Configurable

I know I set out this behavior intentionally, but nested configs with longs specified should not be non-nested. This is because when you nest a configurable that isn't defined in-file, you get unexpected switches on the command line.

  class A
    config :key, 'value', :long => 'long'
  end
  
  class B
    nest :a, A
  end

Should make:

--a:long

Not:

--long