Added index.lp to the index_files

mongoose.c

@@ -449,7 +449,8 @@ static const char *config_options[] = {
   "d", "enable_directory_listing", "yes",
   "e", "error_log_file", NULL,
   "g", "global_auth_file", NULL,
-  "i", "index_files", "index.html,index.htm,index.cgi,index.shtml,index.php",
+  "i", "index_files",
+        "index.html,index.htm,index.cgi,index.shtml,index.php,index.lp",
   "k", "enable_keep_alive", "no",
   "l", "access_control_list", NULL,
   "m", "extra_mime_types", NULL,