+xsd = \
+filter_auth_simple.xsd \
+filter_backend_test.xsd \
+filter_bounce.xsd \
+filter_cgi.xsd \
+filter_cql_rpn.xsd \
+filter_frontend_net.xsd \
+filter_http_file.xsd \
+filter_limit.xsd \
+filter_load_balance.xsd \
+filter_log.xsd \
+filter_multi.xsd \
+filter_query_rewrite.xsd \
+filter_record_transform.xsd \
+filter_session_shared.xsd \
+filter_sru_z3950.xsd \
+filter_virt_db.xsd \
+filter_z3950_client.xsd \
+filter_zoom.xsd \
+local.xsd \
+metaproxy.xsd \
+retrievalinfo.xsd