ok deraadt@

* except when it is escaped with a `\' at the end of the line
- fix remaining .Nm usage as well
- this is from a patch I received from kwesterback@home.com, who has been
working on some scripts for fixing formatting errors in mdoc'd man pages
Ok, so there could be a cost/benefit debate with this commit, but since I have
the patch we might as well commit it...

it's not supposed to be a hyphen/dash

Out of the approximately 1450 man pages, only about 90 of them were wrong.
Thanks to kwesterback@home.com for coming up with a script and patch to repair
this. The patch also inserted a .Os macro in the few man pages that were
missing one.

not "Month, ##, ####"

kern.arandom.

keeps us from misbehaving if the user gives us a src string that is not
NUL-terminated.  This is one of those "should not happen" cases but it
is good to play it safe.  Pointed out by Casper Dik <casper@holland.sun.com>

is used instead; kwesterback@home.com

o strsep is not in ANSI X3.159-1989 (though it is in C9X)

- Sort xrefs by section, and then alphabetically.
- Add missing commas between xref items.
- Remove commas from the last xref entry.
- Remove duplicate entries.

of the src string if len(src) >= size.  Speeds up the common case a bit.