- Add openobex's unusual pkgconfig to pkgconfig path

- Prepend dbus_libs pkgconfig to pkgconfig path, as otherwise the dbus-daemon pkgconfig wins,
  as it has the same name (dbus-1.pc), which doesn't provide all the dbus headers that are needed
- Apply the included patch to obex-data-server which lets it build against current openobex

pkgs/tools/bluetooth/obex-data-server/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, libusb, glib, dbus_glib, bluez, openobex }:
+{ stdenv, fetchurl, pkgconfig, libusb, glib, dbus_glib, bluez, openobex, dbus_libs }:
    
 stdenv.mkDerivation rec {
   name = "obex-data-server-0.4.6";
@@ -8,7 +8,14 @@ stdenv.mkDerivation rec {
     sha256 = "0kq940wqs9j8qjnl58d6l3zhx0jaszci356xprx23l6nvdfld6dk";
   };
 
-  buildInputs = [ pkgconfig libusb glib dbus_glib bluez openobex ];
+  buildInputs = [ pkgconfig libusb glib dbus_glib bluez openobex dbus_libs ];
+
+  patches = [ ./obex-data-server-0.4.6-build-fixes-1.patch ];
+
+  preConfigure = ''
+  addToSearchPath PKG_CONFIG_PATH ${openobex}/lib64/pkgconfig
+  export PKG_CONFIG_PATH="${dbus_libs}/lib/pkgconfig:$PKG_CONFIG_PATH"
+  '';
 
   meta = {
     homepage = http://wiki.muiline.com/obex-data-server;