Option to not use CPSV during FXP transfers (with Implicit SSL on both sites)

[tonyparker]

To prove it works with 2 ioFTPD servers with Implicit SSL encryption enabled, I manually setup a transfer as follows:

[L] PROT C
[L] 200 Protection set to: Clear.
[R] PROT C
[R] 200 Protection set to: Clear.
[L] PASV
[L] 227 Entering Passive Mode (x,x,x,x,y,z)
[R] PORT x,x,x,x,y,z
[R] 200 PORT command successful.
[R] STOR xxxxxxxx.xxx
[R] 150 Opening ASCII mode data connection for xxxxxxxx.xxx.
[L] RETR xxxxxxxx.xxx
[L] 150 Opening BINARY mode data connection for xxxxxxxx.xxx.
[R] 226 Transfer complete.
[L] 226 Transfer complete.


I verified afterwards that the file did infact transfer properly.