Update NcFTP Client

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>
Update libidn to version 1.28.

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>
Update Erlang/OTP to version R16B03-1

Signed-off-by: Rudá Moura <ruda.moura@gmail.com>