/*
 * call-seq:
 *   easy.ftp_response_timeout = fixnum or nil        => fixnum or nil
 *
 * Set a timeout period (in seconds) on the amount of time that the server
 * is allowed to take in order to generate a response message for a command
 * before the session is considered hung. While curl is waiting for a
 * response, this value overrides +timeout+. It is recommended that if used
 * in conjunction with +timeout+, you set +ftp_response_timeout+ to a value
 * smaller than +timeout+.
 *
 * Ignored if libcurl version is < 7.10.8.
 */
static VALUE ruby_curl_easy_ftp_response_timeout_set(VALUE self, VALUE ftp_response_timeout) {