afio: package has moved to GitHub

The old homepage and src URLs no longer exist.  The author of the package
confirms on GitHub that GitHub is now the official homepage (see
kholtman/afio#12).

pkgs/tools/archivers/afio/default.nix

@@ -1,12 +1,14 @@
-{ stdenv, fetchurl } :
+{ stdenv, fetchFromGitHub } :
 
 stdenv.mkDerivation rec {
   version = "2.5.2";
   pname = "afio";
 
-  src = fetchurl {
-    url = "http://members.chello.nl/~k.holtman/${pname}-${version}.tgz";
-    sha256 = "1fa29wlqv76hzf8bxp1qpza1r23pm2f3m7rcf0jpwm6z150s2k66";
+  src = fetchFromGitHub {
+    owner = "kholtman";
+    repo = "afio";
+    rev = "v${version}";
+    sha256 = "1vbxl66r5rp5a1qssjrkfsjqjjgld1cq57c871gd0m4qiq9rmcfy";
   };
 
   /*
@@ -18,7 +20,7 @@ stdenv.mkDerivation rec {
   installFlags = [ "DESTDIR=$(out)" ];
 
   meta = {
-    homepage = "http://members.chello.nl/~k.holtman/afio.html";
+    homepage = "https://github.com/kholtman/afio";
     description = "Fault tolerant cpio archiver targeting backups";
     platforms = stdenv.lib.platforms.all;
     /*