Update to r40525:
- The nsupdate(8) man page no longer exists: nsupdate(1) replaces it. Change
the reference in the "network servers" Handbook chapter. [1]
- Add nsupdate(1) to the man page references file, without removing the old
one so that translations don't break.
Submitted by: Bjoern Heidotting
Obtained from: The FreeBSD German Documentation Project