Added some DragonFly-only constants.

src/unix/bsd/freebsdlike/dragonfly/mod.rs

@@ -371,6 +371,13 @@ pub const LC_ALL_MASK: ::c_int = LC_COLLATE_MASK
                                | LC_TIME_MASK;
 
 pub const TIOCSIG: ::c_uint = 0x2000745f;
+pub const TIOCSIG: ::c_uint = 0x2000745f;
+pub const BTUARTDISC: ::c_int = 0x7;
+pub const TIOCDCDTIMESTAMP: ::c_uint = 0x40107458;
+pub const TIOCISPTMASTER: ::c_uint = 0x20007455;
+pub const TIOCMODG: ::c_uint = 0x40047403;
+pub const TIOCMODS: ::c_ulong = 0x80047404;
+pub const TIOCREMOTE: ::c_ulong = 0x80047469;
 
 extern {
     pub fn mprotect(addr: *mut ::c_void, len: ::size_t, prot: ::c_int)