Use AUE_GETDIRENTRIES instead of AUE_O_GETDENTS and AUE_NULL for a number
of directory reading system calls.

Respell a mis-spelled event name.

Clean up white space/line wraps in a couple of places.

Assign event numbers to some new system call entries that have turned
up in the list since audit support was added.

Obtained from: TrustedBSD Project