Proxy options to match PuTTY 0.78
PuTTY 0.78 has several proxy types that WinSCP 5.21.5 lacks. (some of them are covered by the SSH tunnel option, but PuTTY 0.78 has 3 different ways to do that. (And import of setups using SSH proxies on PuTTY would likely fail)
(I'm currently still using the "local" option for SSH tunnels, the "SSH to proxy and use port forwarding" setting fails to work when imported)
(I'm currently still using the "local" option for SSH tunnels, the "SSH to proxy and use port forwarding" setting fails to work when imported)