* Get rid of many instances of "args: with args;", and other coding

guidelines violations.
* Updated libsamplerate to 0.1.7.

svn path=/nixpkgs/trunk/; revision=22782

pkgs/tools/networking/iperf/default.nix

@@ -1,14 +1,13 @@
-args: with args;
+{ stdenv, fetchurl }:
+
 stdenv.mkDerivation {
   name = "iperf-2.0.4";
 
-  src = args.fetchurl {
+  src = fetchurl {
     url = http://garr.dl.sourceforge.net/sourceforge/iperf/iperf-2.0.4.tar.gz;
     sha256 = "0i3r75prbyxs56rngjbrag8rg480ki3daaa924krrafng30z2liv";
   };
 
-#buildInputs =(with args; []);
-
   meta = {
     homepage = ""; 
     description = "tool to measure IP bandwidth using UDP or TCP";