Fix test for arts.

configure

@@ -11043,7 +11043,7 @@ if test "${ac_cv_lib_artsc_arts_init+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="-lartsc  $LIBS"
+LIBS="-lartsc $ARTSC_LIBS $LIBS"
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF

configure.ac

@@ -684,7 +684,8 @@ then
         [AC_TRY_COMPILE([#include <artsc.h>],[arts_stream_t stream;],
             [AC_SUBST(ARTSLIBS, $ARTSC_LIBS)
             AC_SUBST(ARTSINCL, $ARTSC_CFLAGS)
-            AC_DEFINE(HAVE_ARTS, 1, [Define if you have ARTS sound server])])],)
+            AC_DEFINE(HAVE_ARTS, 1, [Define if you have ARTS sound server])])],,
+            $ARTSC_LIBS)
     CFLAGS="$save_CFLAGS"
 fi