lws_serve_http_file: skip adding cache control if h1 other_headers do it
lws_serve_http_file: skip adding cache control if h1 other_headers do it
sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets,sartura/libwebsockets