filegive: move from googlecode to github

pkgs/tools/networking/filegive/default.nix

···
 
   # Code with BSD license
   srcNatPMP = fetchgit {
-    url = "https://code.google.com/p/go-nat-pmp/";
+    url = https://github.com/jackpal/go-nat-pmp;
     rev = "e04deda90d56";
     sha256 = "1swwfyzaj3l40yh9np3x4fcracgs79nwryc85sxbdakx8wwxs2xb";
   };