Patch channel handler to allow Brocade's 2nd hello. We now allow sw_hello,...

Patch channel handler to allow Brocade's 2nd hello. We now allow sw_hello, ctrl_hello, sw_hello assuming the second sw_hello's protocol version matches what we calculated. If it doesn't, then it might not be the brocade but instead an unsupported switch trying to reconnect (although this should resultin a new socket being established and a new channel handler being instantiated).