Mark in three more pieces of on-going work:
(1) Add the p_ucred -> td_ucred task explicitly, rather than relying on
the larger "proc locking" task. Assign to John since he just committed a bunch, and I don't know if he's done (it looks like he is, so should close this task).
(2) Add an item for the suser and p_can*() API switches to use thread
instead of process pointers. Since John has patches, and has indicated an impending commit, assign ownership to him.
(3) arr has indicated he's taking a stab at adding locking to the kernel
linker and module structures. Go ahead and assign ownership to him.