Various updates to the SMP task list:

o Move two VFS locking cleanups/tasks into the WIP sections from the

New section, update timestamps.  Jeff has been actively working on
VFS locking for a while now, and has addressed sizable chunks of
these tasks.

o Add kan as an owner on the i386 lazy context switch task.

o Add a sparc64 lazy context switch task and assign to Jake.

o Remove green from VM task, leaving just alc, update timestamp,

and mark as a WIP.