1. Deploy the key files to separate folder to avoid overwriting.
2. Enable hostkeys and kex unit tests.
3. Generate debug info in pdb
4. minor update on snmprintf
AF_UNIX kind of sockets are now supported. socket() and connect() calls are implemented. Windows specific logic in authfd.c is now removed. https://github.com/PowerShell/Win32-OpenSSH/issues/532 is created to keep track of ssh-agent end point authentication