message: Recognize FreeBSD
diff: @@ -97,6 +97,11 @@ mod tests {
  "windows"
  }
  + #[cfg(target_os = "freebsd")]
  + fn get_target_os() -> &'static str {
  + "freebsd"
  + }
  +
  #[cfg(target_os = "linux")]
  fn get_target_os() -> &'static str {
  "linux"
  