Regenerate configure to enable dbus

The configure script was out of date - re-running autogen.sh adds dbus
       support.

configure

@@ -813,6 +813,7 @@ enable_video_dummy
 enable_video_opengl
 enable_video_opengles
 enable_libudev
+enable_dbus
 enable_input_tslib
 enable_pthreads
 enable_pthread_sem
@@ -1536,6 +1537,7 @@ Optional Features:
   --enable-video-opengl   include OpenGL support [[default=yes]]
   --enable-video-opengles include OpenGL ES support [[default=yes]]
   --enable-libudev        enable libudev support [[default=yes]]
+  --enable-dbus           enable D-Bus support [[default=yes]]
   --enable-input-tslib    use the Touchscreen library for input
                           [[default=yes]]
   --enable-pthreads       use POSIX threads for multi-threading
@@ -20740,6 +20742,80 @@ $as_echo "#define HAVE_LIBUDEV_H 1" >>confdefs.h
     fi
 }
 
+CheckDBus()
+{
+    # Check whether --enable-dbus was given.
+if test "${enable_dbus+set}" = set; then :
+  enableval=$enable_dbus;
+else
+  enable_dbus=yes
+fi
+
+    if test x$enable_dbus = xyes; then
+        # Extract the first word of "pkg-config", so it can be a program name with args.
+set dummy pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_PKG_CONFIG+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $PKG_CONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_path_PKG_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_path_PKG_CONFIG" && ac_cv_path_PKG_CONFIG="no"
+  ;;
+esac
+fi
+PKG_CONFIG=$ac_cv_path_PKG_CONFIG
+if test -n "$PKG_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+$as_echo "$PKG_CONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+        if test x$PKG_CONFIG != xno; then
+            DBUS_CFLAGS=`$PKG_CONFIG --cflags dbus-1`
+            save_CFLAGS="$CFLAGS"
+            CFLAGS="$save_CFLAGS $DBUS_CFLAGS"
+            ac_fn_c_check_header_mongrel "$LINENO" "dbus/dbus.h" "ac_cv_header_dbus_dbus_h" "$ac_includes_default"
+if test "x$ac_cv_header_dbus_dbus_h" = xyes; then :
+  have_dbus_dbus_h_hdr=yes
+else
+  have_dbus_dbus_h_hdr=no
+fi
+
+
+            CFLAGS="$save_CFLAGS"
+            if test x$have_dbus_dbus_h_hdr = xyes; then
+
+$as_echo "#define HAVE_DBUS_DBUS_H 1" >>confdefs.h
+
+                EXTRA_CFLAGS="$EXTRA_CFLAGS $DBUS_CFLAGS"
+            fi
+        fi
+    fi
+}
+
 CheckTslib()
 {
     # Check whether --enable-input-tslib was given.
@@ -21927,6 +22003,7 @@ case "$host" in
         CheckOpenGLX11
         CheckOpenGLESX11
         CheckLibUDev
+        CheckDBus
         CheckInputEvents
         CheckTslib
         CheckUSBHID