Run autoconf in wake of commit a692ee5.

Heikki updated configure.in but evidently forgot to include the updated
configure script in the commit.  Per buildfarm.

Author: tglsfdc

configure

@@ -11666,6 +11666,12 @@ esac
  ;;
 esac
 
+  case " $LIBOBJS " in
+  *" system.$ac_objext "* ) ;;
+  *) LIBOBJS="$LIBOBJS system.$ac_objext"
+ ;;
+esac
+
   case " $LIBOBJS " in
   *" win32env.$ac_objext "* ) ;;
   *) LIBOBJS="$LIBOBJS win32env.$ac_objext"