Integrate the code in the digest and cryptoutil modules directly into the sha1 module.

Author: Palmer Cox

src/librustpkg/cryptoutil.rs

@@ -55,8 +55,6 @@ pub mod api;
 mod conditions;
 pub mod context;
 mod crate;
-mod cryptoutil;
-mod digest;
 pub mod exit_codes;
 mod installed_packages;
 mod messages;