Merge remote-tracking branch 'origin/master' into staging

Conflicts:
	pkgs/development/libraries/libav/default.nix
	pkgs/shells/bash/bash-4.2-patches.nix
	pkgs/stdenv/generic/default.nix

pkgs/development/libraries/gstreamer/qt-gstreamer/default.nix

@@ -0,0 +1,18 @@
+{ stdenv, fetchurl, gst_all_1, boost, glib, qt4, cmake
+, automoc4, flex, bison, pkgconfig }:
+
+stdenv.mkDerivation rec {
+  name = "${pname}-1.2.0";
+  pname = "qt-gstreamer";
+
+  src = fetchurl {
+    url = "http://gstreamer.freedesktop.org/src/${pname}/${name}.tar.xz";
+    sha256 = "9f3b492b74cad9be918e4c4db96df48dab9c012f2ae5667f438b64a4d92e8fd4";
+  };
+
+  buildInputs = [ gst_all_1.gstreamer gst_all_1.gst-plugins-base glib qt4 ];
+  propagatedBuildInputs = [ boost ];
+  nativeBuildInputs = [ cmake automoc4 flex bison pkgconfig ];
+
+  cmakeFlags = "-DUSE_QT_PLUGIN_DIR=OFF -DUSE_GST_PLUGIN_DIR=OFF";
+}