SSH-2.0-OpenSSH_7.1p1 Microsoft_Win32_port_with_VS or
SSH-2.0-OpenSSH_7.1p1 Microsoft_Win32_port is transmitted as sshd & ssh
version based if Visual Studio or Mingw build compiler is used.
MS Win32 port & build date added in text part of version id ssh client
send to the remote sshd. sshd also shows this string via environment
variable "SSH_CLIENT_ID" . All these are allowed and encouraged by the
SSH RFC and improves usability and assists users to know what ssh
versions and vendor build they are running.