Update man page for the "syskrb5" mount option

[rmacklem]

Summary

Commit 896516e54a8c added a new NFS mount option
used for Kerberized NFSv4.1/4.2 mounts. It specifies that
AUTH_SYS be used for state maintenance (also called system)
operations. This allows the mount to be done without the
"gssname" option or a valid Kerberos TGT being held by the
user doing the mount (so it can be specified in fstab(5) for
example);

Test Plan

Tested against the FreeBSD and Linux knfsd NFSv4.1/4.2
servers. Additional testing against other NFSv4.1/4.2
servers will be done during the NFSv4 Bakeathon being
held the last week of April.

[• karels]

sbin/mount_nfs/mount_nfs.8

446

s/use/uses/, or maybe "should use"

451

"nor" should be used with "neither"; I think "or" works.

452

I don't think TGT has been defined; maybe "ticket-granting ticket (TGT)" (caps for the spelled-out version?)

[rmacklem]

sbin/mount_nfs/mount_nfs.8

452

I used "ticket granting ticket" since that is what is
in "man kinit".

[rmacklem]

Made the changes suggested by karels@.

[• karels]

LGTM, but it would be good for manpages to look too.

[gbe]

LGTM. There is one mandoc warning, but that doesn't belong to this differential. I fix that minor warning once this is landed.