wireguard-tools: 0.0.20191219 -> 1.0.20191226

the userspace wireguard tools have been pulled out into their own repo as
announced in this mailing list post:

https://lists.zx2c4.com/pipermail/wireguard/2019-December/004787.html
(cherry picked from commit d6be252)

pkgs/tools/networking/wireguard-tools/default.nix

@@ -14,14 +14,14 @@ with stdenv.lib;
 
 stdenv.mkDerivation rec {
   pname = "wireguard-tools";
-  version = "0.0.20191219";
+  version = "1.0.20191226";
 
   src = fetchzip {
-    url = "https://git.zx2c4.com/WireGuard/snapshot/WireGuard-${version}.tar.xz";
-    sha256 = "1qxpjvj3927xdly022rp2sndbifmr0c2y6ik77v43k95ch94716d";
+    url = "https://git.zx2c4.com/wireguard-tools/snapshot/wireguard-tools-${version}.tar.xz";
+    sha256 = "14v5asdjazz0p3bhg8na9w6y66i3jhnn8imxhq8xlix1k4n93l4z";
   };
 
-  sourceRoot = "source/src/tools";
+  sourceRoot = "source/src";
 
   nativeBuildInputs = [ makeWrapper ];
   buildInputs = optional stdenv.isLinux libmnl;
@@ -51,10 +51,10 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Tools for the WireGuard secure network tunnel";
-    downloadPage = "https://git.zx2c4.com/WireGuard/refs/";
+    downloadPage = "https://git.zx2c4.com/wireguard-tools/refs/";
     homepage = "https://www.wireguard.com/";
     license = licenses.gpl2;
-    maintainers = with maintainers; [ elseym ericsagnes mic92 zx2c4 globin ma27 ];
+    maintainers = with maintainers; [ elseym ericsagnes mic92 zx2c4 globin ma27 xwvvvvwx ];
     platforms = platforms.unix;
   };
 }