build: make D-Bus configurable

Patch accepted upstream:
https://github.com/xbmc/xbmc/commit/630f930d4c9c33230e9ff7df24f93afb3f05881f

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>

diff -uNr xbmc-13.2-Gotham.org/configure.in xbmc-13.2-Gotham/configure.in
--- xbmc-13.2-Gotham.org/configure.in	2014-08-17 15:19:05.000000000 +0200
+++ xbmc-13.2-Gotham/configure.in	2014-09-02 20:55:06.932442467 +0200
@@ -129,6 +129,7 @@
 goom_enabled="== GOOM enabled. =="
 goom_disabled="== GOOM disabled. =="
 alsa_disabled="== ALSA support disabled. =="
+dbus_disabled="== DBUS support disabled. =="
 rsxs_enabled="== RSXS enabled. =="
 rsxs_disabled="== RSXS disabled. =="
 fishbmc_enabled="== FishBMC enabled. =="
@@ -369,6 +370,12 @@
   [use_alsa=$enableval],
   [use_alsa=yes])
 
+AC_ARG_ENABLE([dbus],
+  [AS_HELP_STRING([--disable-dbus],
+  [disable DBUS support])],
+  [use_dbus=$enableval],
+  [use_dbus=yes])
+
 AC_ARG_ENABLE([pulse],
   [AS_HELP_STRING([--enable-pulse],
   [enable PulseAudio support (default is auto)])],
@@ -1253,10 +1260,14 @@
     [INCLUDES="$INCLUDES $ALSA_CFLAGS"; LIBS="$LIBS $ALSA_LIBS"; use_alsa=yes],
     AC_MSG_NOTICE($alsa_not_found); use_alsa=no)
 fi
+if test "x$use_dbus" != "xno"; then
   PKG_CHECK_MODULES([DBUS],    [dbus-1],
     [INCLUDES="$INCLUDES $DBUS_CFLAGS"; LIBS="$LIBS $DBUS_LIBS"; use_dbus=yes]; \
     AC_DEFINE([HAVE_DBUS],[1],["Define to 1 if dbus is installed"]),
     AC_MSG_NOTICE($missing_library); use_dbus=no)
+else
+  AC_MSG_NOTICE($dbus_disabled)
+fi
   if test "x$use_sdl" != "xno"; then
     PKG_CHECK_MODULES([SDL],   [sdl],
       [INCLUDES="$INCLUDES $SDL_CFLAGS"; LIBS="$LIBS $SDL_LIBS"],