virtualbox: Update to upstream version 4.2.4.

This updates both virtualbox and guest additions.

Upstream changes in this release:

 * GUI: fixed validation warning on global settings / proxy page (4.2.2
        regression)
 * GUI: fixed crash with multiple guest screens on certain conditions (OS X
        hosts only)
 * VBoxBalloonCtrl: fixed command line argument handling of ballooning module
 * VRDP: fixed occasional crash during a video playback in the guest
 * BIOS: fixed broken DMI information (4.2 regression)
 * BIOS: workaround for booting from Windows 2000 floppy disks
 * EFI: fixed video mode selection loss on VM reboot
 * Parallel: fixed parallel port printing failure/ paper queue empty error
             (Windows hosts only)
 * NAT: fixed crash on alias-less DNS responses when host-resolver is used
 * Storage: fixed hang under rare circumstances

With bug IDs: https://www.virtualbox.org/wiki/Changelog

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

pkgs/applications/virtualization/virtualbox/default.nix

@@ -10,7 +10,7 @@ with stdenv.lib;
 
 let
 
-  version = "4.2.2";
+  version = "4.2.4";
 
   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 = "943daa13694605d5d0a23ffef27c398b5e72ada669de89bad4b98f000f029700";
+    sha256 = "a7c607523c1c10b7b978ab39a92bb646517316548aa4a1a74b6e434ac2bf0adc";
   };
 
   buildInputs =