found with the new mandoc(1) MANDOCERR_AN_MISSING warning;
no text changes

- clean up .Xr's

o make first arg const since we don't modify it
o use strsep() instead of strtok() as strtok() changes internal state
o add some bounds checking and use strlcat() instead of pointer arithmetic
o ANSI function headers
Originally based on a patch from Lars J. Buitinck but much modified.

o) .Sh AUTHOR -> .Sh AUTHORS;
o) We don't like .Pp before/after .Sh;
o) We don't like .Pp before/after .Rs/.Re;
o) NetBSD -> .Nx;
o) OpenBSD -> .Ox;
millert@ ok

logdaemon, so this applies:
ftp://ftp.porcupine.org/pub/security/logdaemon_license

argument to .Dt, and move the BUGS section to the end like most man pages.
This is my 1000th commit since joining the OpenBSD dev team.