Fixing this to work as a Rust 2018 library following the new idioms.

build.rs

@@ -1,6 +1,4 @@
-#[macro_use]
+use scribe::{error, warn};
-extern crate scribe;
-
 
 
 use std::env;

src/lib.rs

@@ -12,10 +12,6 @@
 #[cfg(not(feature="use_std"))]
 extern crate core as std;
 
-extern crate scribe;
-extern crate binding;
-extern crate weave;
-
 
 
 #[cfg(not(feature="rust_lib"))]