avahi: 0.6.31 -> 0.6.32

Bugfix release, backwards compatible:

  https://github.com/lathiat/avahi/releases/tag/v0.6.32

* Update src URL to github (the latest release is only available there).
* Change "$(mkdir_p)" to "$(MKDIR_P)" in the patch to keep it working
  (apply'able).

pkgs/development/libraries/avahi/default.nix

@@ -7,11 +7,12 @@
 assert qt4Support -> qt4 != null;
 
 stdenv.mkDerivation rec {
-  name = "avahi-0.6.31";
+  name = "avahi-${version}";
+  version = "0.6.32";
 
   src = fetchurl {
-    url = "${meta.homepage}/download/${name}.tar.gz";
-    sha256 = "0j5b5ld6bjyh3qhd2nw0jb84znq0wqai7fsrdzg7bpg24jdp2wl3";
+    url = "https://github.com/lathiat/avahi/releases/download/v${version}/avahi-${version}.tar.gz";
+    sha256 = "0m5l3ny9i2z1l27y4wm731c0zdkmfn6l1szbajx0ljjiblc92jfm";
   };
 
   patches = [ ./no-mkdir-localstatedir.patch ];