freebsd update proposal.

introducing MAP_ALIGNED macro and MAP_ALIGNED_SUPER.

Author: devnexen

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

@@ -448,6 +448,7 @@ pub const Q_GETQUOTA: ::c_int = 0x700;
 pub const Q_SETQUOTA: ::c_int = 0x800;
 
 pub const MAP_GUARD: ::c_int = 0x00002000;
+pub const MAP_ALIGNED_SUPER: ::c_int = 1 << 24;
 
 pub const POSIX_FADV_NORMAL: ::c_int = 0;
 pub const POSIX_FADV_RANDOM: ::c_int = 1;