Pretty printing when examining a type object in the repl

[astrieanna]

Calling dump on a type object gives non-useful output:

julia> dump(Response)
Response

On an instantiation of that type, it's a lot more useful:

julia> r = Response(404)
Response(404,"Not Found",["Server"=>"Julia/0.2.0-606.rdcd0"],"",false)

julia> dump(r)
Response 
  status: Int32 
  message: ASCIIString "Not Found"
  headers: Dict{String,String} len 1
    Server: ASCIIString "Julia/0.2.0-606.rdcd0"
  data: ASCIIString ""
  finished: Bool 

dump on a type object should do something similar to on the instantiation.
Something like:

julia> dump(Response)
Response 
  status: Int32 
  message: ASCIIString
  headers: Dict{String,String}
  data: ASCIIString
  finished: Bool 

[JeffBezanson]

Now xdump(type) should work well. For some reason dump shows less than xdump in this case. Maybe @tshort or @pao can advise.

[pao]

I'm pretty sure all I did was wrangle the patches for that one.