ftpgetput: move control_stream to "struct globals";
unify common data pumpung stage for upload and download;
other small shrinkage. EPSV still not implemented...

function                                             old     new   delta
pump_data_and_QUIT                                     -      82     +82
xconnect_ftpdata                                     127     156     +29
ftpcmd                                               301     304      +3
ftp_die                                               59      55      -4
ftpgetput_main                                       352     344      -8
ftp_send                                             185      91     -94
ftp_receive                                          394     293    -101
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 2/4 up/down: 114/-207)          Total: -93 bytes

1 file changed