kernel panic on HEAD from Oct. 4th sources

[Matthew Dillon]

:I think we should simply prevent these almost reaped processes from 
:staying in the zombie list.  I suggest the attached fix (not yet tested).
:
:cheers
:   simon

    It is probably a good idea to remove it from the list before or
    after the "reap3" sleep loop.  That particular patch may break
    the code at line 785 kern/kern_exit.c, though.

    For now I'd say we should mess with it as little as possible.  We're
    getting too close to the release to accidently break something in the
    scheduler.

						-Matt