Nobody works on this now.
Closes #3378
All bugs documented in the KNOWN_BUGS document are subject for fixing!
1. libcurl
+ 1.1 TFO support on Windows
1.2 More data sharing
1.3 struct lifreq
1.4 signal-based resolver timeouts
1. libcurl
+1.1 TFO support on Windows
+
+ TCP Fast Open is supported on several platforms but not on Windows. Work on
+ this was once started but never finished.
+
+ See https://github.com/curl/curl/pull/3378
+
1.2 More data sharing
curl_share_* functions already exist and work, and they can be extended to