Upload Resume Feature--What to do in Case of Server Timeouts?

I’m uploading revisions to a site, 1000 files or so.
Using 7.3, not the evil beta 7.4.
682 files upload, then…time out.
There’s no way to resume.
You get a message saying, “Publishing Finished,” except that it’s not.
If you start over, you start from scratch.
How can I fix this?