rustc: Move util::sha2 to rustc_back

src/librustc/lib.rs

@@ -126,10 +126,10 @@ pub mod lint;
 
 pub mod util {
     pub use rustc_back::fs;
+    pub use rustc_back::sha2;
 
     pub mod common;
     pub mod ppaux;
-    pub mod sha2;
     pub mod nodemap;
 }
 

src/librustc_back/lib.rs

@@ -32,8 +32,7 @@
       html_favicon_url = "http://www.rust-lang.org/favicon.ico",
       html_root_url = "http://doc.rust-lang.org/")]
 
-#![feature(globs)]
-#![feature(phase)]
+#![feature(globs, phase, macro_rules)]
 #![allow(unused_attribute)] // NOTE: remove after stage0
 
 #[phase(plugin, link)]
@@ -41,6 +40,7 @@ extern crate log;
 extern crate syntax;
 extern crate libc;
 extern crate flate;
+extern crate serialize;
 
 pub mod abi;
 pub mod archive;
@@ -49,6 +49,7 @@ pub mod fs;
 pub mod mips;
 pub mod mipsel;
 pub mod rpath;
+pub mod sha2;
 pub mod svh;
 pub mod target_strs;
 pub mod x86;

src/librustc_back/sha2.rs

@@ -12,6 +12,8 @@
 //! use. This implementation is not intended for external use or for any use where security is
 //! important.
 
+#![allow(deprecated)] // to_be32
+
 use std::iter::range_step;
 use std::num::Zero;
 use std::slice::bytes::{MutableByteVector, copy_memory};