Implement FS virtualization

examples/complete/Makefile

@@ -20,4 +20,4 @@ windows:
 	$(DOCKER) $(PROG).exe
 
 clean:
-	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb log.txt fs.c pack
+	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb log.txt packed_fs.c pack

examples/complete/main.c

@@ -119,7 +119,8 @@ static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
           "Pragma: no-cache\r\nExpires: Thu, 01 Dec 1994 16:00:00 GMT\r\n"
           "Content-Type: multipart/x-mixed-replace; boundary=--foo\r\n\r\n");
     } else if (mg_http_match_uri(hm, "/api/log/static")) {
-      mg_http_serve_file(c, hm, "log.txt", "text/plain", "");
+      struct mg_http_serve_opts opts = {.root_dir = NULL};
+      mg_http_serve_file(c, hm, "log.txt", &opts);
     } else if (mg_http_match_uri(hm, "/api/log/live")) {
       c->label[0] = 'L';  // Mark that connection as live log listener
       mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");