"trying to mount root" message in single user mode

I just updated current from about a week ago to r214187. Now, when I
boot, the kernel message has switched to:

"Trying to mount root from ufs:/dev/ufs/root [rw]..."

Problem is, it always prints [rw], even when booting single user,
where [ro] is expected. The issue is only cosmetic - root is still
mounted read only in single user, as before.

-- 
Rob Farmer