[PATCH] Fix callouts in rp(4)

This patch converts rp(4) from timeout(9) to callout(9).  To do this cleanly, 
it replaces a single, global timer that walks tables of controllers and ports 
to a per-controller timer.  This works much better with locking (since the 
locks are per-controller) and removes the need for various global lookup 
tables in the driver.  The patch is against HEAD but probably applies to 9 and 
10 as well.

http://people.freebsd.org/~jhb/patches/rp_callout.patch

-- 
John Baldwin