Turn KSE for sparc64 into an unowned task since I don't think Marcel is
working on it currently. Can always change it back. I know Ken Smith
is interested, but wasn't sure if he was interested enough to have his
name on it for 5.3 :-).

Re-add the word "root" to "dynamic root".

Unown truss with ptrace; Robert Drehmel has been working on it, but I
haven't seen anything from him lately. Can always change it back.

Unown rpc.lockd task from me. I seem to have become the owner of the
network stack locking task, and there's only so much locking I can
handle.

Change ACL_MASK work to new, since it's been long enough since I had a
WIP that it will be from scratch anyway.

Remove MAC Framework devfs path fix task.