gnumake-3.80: md5->sha256

pkgs/development/tools/build-managers/gnumake/3.80/default.nix

···
 
   src = fetchurl {
     url = http://tarballs.nixos.org/make-3.80.tar.bz2;
-    md5 = "0bbd1df101bc0294d440471e50feca71";
+    sha256 = "06rgz6npynr8whmf7rxgkyvcz0clf3ggwf4cyhj3fcscn3kkk6x9";
   };
 
   patches = [./log.patch];