added qse_sed_getlinnum() and qse_sed_setlinnum()

qse/lib/sed/sed.c

@@ -2642,3 +2642,13 @@ done3:
 	qse_map_fini (&sed->e.out.files);
 	return ret;
 }
+
+qse_size_t qse_sed_getlinenum (qse_sed_t* sed)
+{
+	return sed->e.in.num;
+}
+
+void qse_sed_setlinenum (qse_sed_t* sed, qse_size_t num)
+{
+	sed->e.in.num = num;
+}