message: Improved debug macro
diff: @@ -15,9 +15,8 @@ use std::time::{Duration, Instant};
  // #[cfg(feature = "debug")]
  macro_rules! debug {
  - ($($arg:tt)*) => {
  - println!($($arg)*);
  - }
  + ($fmt:expr) => (println!(concat!("Wasmer::", $fmt)));
  + ($fmt:expr, $($arg:tt)*) => (println!(concat!("Wasmer::", $fmt, "\n"), $($arg)*));
  }
  // #[cfg(not(feature = "debug"))]
  