sync with head
add some test code to ensure basic spl operations are
compilable and not to panic.  i'll remove this code before merging this
branch to trunk.
use workqueue for aiodoned.
define splserial()
add splsoftserial and splserial.
add splsoftserial.
ipl_to_spl: add IPL_STATCLOCK.
add IPL_STATCLOCK, IPL_LOCK, IPL_SCHED.
add IPL_STATCLOCK, IPL_SCHED, IPL_LOCK.
use different numbers for IPL_CLOCK and IPL_STATCLOCK.
add splsoftserial.
pull 1.198 from trunk.
pull 1.199 from trunk.
use splraiseipl.
add IPL_STATCLOCK, IPL_SCHED, IPL_LOCK.
implement splraiseipl/makeiplcookie for sandpoint.
add IPL_STATCLOCK, IPL_SCHED, IPL_LOCK.
add dummy implementations of splraiseipl/makeiplcookie.
define ipl_cookie_t correctly.
makeiplcookie: add a missing parameter name.