dbus: split into multiple outputs and fix referrers

pkgs/applications/virtualization/virtualbox/default.nix

@@ -85,7 +85,7 @@ in stdenv.mkDerivation {
     ls kBuild/bin/linux.amd64/k* tools/linux.amd64/bin/* | xargs -n 1 patchelf --set-interpreter ${stdenv.glibc.out}/lib/ld-linux-x86-64.so.2
     find . -type f -iname '*makefile*' -exec sed -i -e 's/depmod -a/:/g' {} +
     sed -i -e '
-      s@"libdbus-1\.so\.3"@"${dbus.out}/lib/libdbus-1.so.3"@g
+      s@"libdbus-1\.so\.3"@"${dbus.lib}/lib/libdbus-1.so.3"@g
       s@"libasound\.so\.2"@"${alsaLib.out}/lib/libasound.so.2"@g
       ${optionalString pulseSupport ''
       s@"libpulse\.so\.0"@"${libpulseaudio.out}/lib/libpulse.so.0"@g

pkgs/applications/virtualization/virtualbox/guest-additions/default.nix

@@ -75,7 +75,7 @@ stdenv.mkDerivation {
 
     for i in lib/VBoxOGL*.so
     do
-        patchelf --set-rpath $out/lib:${dbus}/lib $i
+        patchelf --set-rpath $out/lib:${dbus.lib}/lib $i
     done
 
     # FIXME: Virtualbox 4.3.22 moved VBoxClient-all (required by Guest Additions