virtualbox: Update to version 4.2.2.

This time, we need to patch, because the upstream tarball got messed up
somehow[TM]. You can find some details about the issue here:

https://www.virtualbox.org/pipermail/vbox-dev/2012-October/005408.html

Our patch is removing the language file, as it seems that even in SVN trunk it
isn't available anymore. So, let's hope we can remove this patch in the next
upstream release.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

pkgs/applications/virtualization/virtualbox/default.nix

@@ -10,7 +10,7 @@ with stdenv.lib;
 
 let
 
-  version = "4.2.0";
+  version = "4.2.2";
 
   forEachModule = action: ''
     for mod in \
@@ -34,7 +34,7 @@ in stdenv.mkDerivation {
 
   src = fetchurl {
     url = "http://download.virtualbox.org/virtualbox/${version}/VirtualBox-${version}.tar.bz2";
-    sha256 = "895426ecac371bef4c070e8bcc9306f0c57dcbd6be25188d915b63ddde6f49e6";
+    sha256 = "943daa13694605d5d0a23ffef27c398b5e72ada669de89bad4b98f000f029700";
   };
 
   buildInputs =
@@ -44,7 +44,9 @@ in stdenv.mkDerivation {
     ++ optional javaBindings jdk
     ++ optional pythonBindings python;
 
-  patchPhase = ''
+  patches = [ ./remove_fa_ir.patch ];
+
+  postPatch = ''
     set -x
     MODULES_BUILD_DIR=`echo ${kernel}/lib/modules/*/build`
     sed -e 's@/lib/modules/`uname -r`/build@'$MODULES_BUILD_DIR@ \