message: Update for radeco-lib::r2
diff: extern crate r2pipe;
  +extern crate radeco_lib;
  use std::io;
  use std::io::prelude::*;
  use self::r2pipe::R2Pipe;
  +use self::radeco_lib::frontend::r2::R2;
  pub struct Radeco {
  filename: String,
  r2p: Option<R2Pipe>,
  + r2p2: Option<R2>,
  }
  impl Radeco {
  @@ -39,7 +42,7 @@ impl Radeco {
  }
  pub fn file(filename: String) -> Result<Radeco,&'static str> {
  - let mut r = Radeco{filename: filename.to_owned(), r2p: None};
  + let mut r = Radeco{filename: filename.to_owned(), r2p: None, r2p2: None};
  let r2p = R2Pipe::spawn (&*filename).unwrap();
  r.r2p = Some(r2p);
  // Err("[r2pipe] initialization error")
  @@ -47,7 +50,7 @@ impl Radeco {
  }
  pub fn pipe() -> Result<Radeco,&'static str> {
  - let mut r = Radeco{filename: "".to_owned(), r2p: None};
  + let mut r = Radeco{filename: "".to_owned(), r2p: None, r2p2: None};
  let r2p = R2Pipe::open ().unwrap();
  r.r2p = Some(r2p);
  // Err("[r2pipe] initialization error")
  