The fsuid code was removed, since it doesn't work
when using ports greater than 1024. A bug which
occurred when setresuid() was called with the
wrong arguments in certain circumstances was
fixed.
Major code cleanups were done. The
-DBIG_SECURITY_HOLE compile-time option is no
longer needed on Linux. The lsm_rsuid LSM kernel
module can be used, which prevents root exploits.