#1 Add port option to SFTP upload

[Mike Lerley]

This is a simple patch to allow specifying a port number to use to connect with SFTP. It allows any of these connect string formats:

sftp:username:password@machine:/path
sftp:username:password@machine:port:/path
sftp:username@machine:/path
sftp:username@machine:port:/path

[Mike Lerley]

Allow specifying SFTP port