Updating neverball. That required adding physfs.

svn path=/nixpkgs/trunk/; revision=18220

pkgs/development/libraries/physfs/default.nix

@@ -0,0 +1,18 @@
+{stdenv, fetchurl, cmake}:
+
+stdenv.mkDerivation rec {
+  name = "physfs-2.0.0";
+
+  src = fetchurl {
+    url = "${meta.homepage}/downloads/${name}.tar.gz";
+    sha256 = "072hqprni4vf4ax6b659s2xxrbz0y6iziarsczawbhi69m4azpyb";
+  };
+
+  buildInputs = [ cmake ];
+
+  meta = {
+    homepage = http://icculus.org/physfs/;
+    description = "Library to provide abstract access to various archives";
+    license = "free";
+  };
+}