New file. Test for sieve loadable extensions.

+# -*- tcl -*-
+# This file is part of Mailutils testsuite.
+# Copyright (C) 2002, Free Software Foundation
+#  
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#   
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#  
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 
+
+mu_version
+if ![mu_check_capability HAVE_LIBLTDL] {
+    exit 0
+}
+
+set env(LTDL_LIBRARY_PATH) "${top_builddir}/examples"
+
+sieve_test -f ${MU_SPOOL_DIR}/bigto.mbox  numaddr.sv -pattern \
+	"DISCARD on msg uid 1: marking as deleted"
+
+# End of ext.exp
\ No newline at end of file