Fix more fallout in rustdoc.

src/rustdoc/config.rs

@@ -77,7 +77,7 @@ fn default_config(input_crate: ~str) -> config {
     }
 }
 
-type program_output = fn~(~str, ~[~str]) ->
+type program_output = fn~((&str), (&[~str])) ->
     {status: int, out: ~str, err: ~str};
 
 fn mock_program_output(_prog: ~str, _args: ~[~str]) -> {

src/rustdoc/markdown_writer.rs

@@ -97,7 +97,7 @@ fn pandoc_writer(
         let pipe_out = os::pipe();
         let pipe_err = os::pipe();
         let pid = run::spawn_process(
-            pandoc_cmd, pandoc_args, none, none,
+            pandoc_cmd, pandoc_args, &none, &none,
             pipe_in.in, pipe_out.out, pipe_err.out);
 
         let writer = io::fd_writer(pipe_in.out, false);